Contract 0x52d1c6f4db354c8f2f3c87b8f90081115356c597 1

// SPDX-License-Identifier: GPL-2.0
pragma solidity ^0.8.0;

import "../oz/0.8.0/access/Ownable.sol";
import "../oz/0.8.0/token/ERC20/utils/SafeERC20.sol";

abstract contract ZapBaseV2 is Ownable {
    using SafeERC20 for IERC20;
    bool public stopped = false;

    // if true, goodwill is not deducted
    mapping(address => bool) public feeWhitelist;

    uint256 public goodwill;
    // % share of goodwill (0-100 %)
    uint256 affiliateSplit;
    // restrict affiliates
    mapping(address => bool) public affiliates;
    // affiliate => token => amount
    mapping(address => mapping(address => uint256)) public affiliateBalance;
    // token => amount
    mapping(address => uint256) public totalAffiliateBalance;
    // swapTarget => approval status
    mapping(address => bool) public approvedTargets;

    address internal constant ETHAddress =
        0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    constructor(uint256 _goodwill, uint256 _affiliateSplit) {
        goodwill = _goodwill;
        affiliateSplit = _affiliateSplit;
    }

    // circuit breaker modifiers
    modifier stopInEmergency {
        if (stopped) {
            revert("Temporarily Paused");
        } else {
            _;
        }
    }

    function _getBalance(address token)
        internal
        view
        returns (uint256 balance)
    {
        if (token == address(0)) {
            balance = address(this).balance;
        } else {
            balance = IERC20(token).balanceOf(address(this));
        }
    }

    function _approveToken(address token, address spender) internal {
        IERC20 _token = IERC20(token);
        if (_token.allowance(address(this), spender) > 0) return;
        else {
            _token.safeApprove(spender, type(uint256).max);
        }
    }

    function _approveToken(
        address token,
        address spender,
        uint256 amount
    ) internal {
        IERC20(token).safeApprove(spender, 0);
        IERC20(token).safeApprove(spender, amount);
    }

    // - to Pause the contract
    function toggleContractActive() public onlyOwner {
        stopped = !stopped;
    }

    function set_feeWhitelist(address zapAddress, bool status)
        external
        onlyOwner
    {
        feeWhitelist[zapAddress] = status;
    }

    function set_new_goodwill(uint256 _new_goodwill) public onlyOwner {
        require(
            _new_goodwill >= 0 && _new_goodwill <= 100,
            "GoodWill Value not allowed"
        );
        goodwill = _new_goodwill;
    }

    function set_new_affiliateSplit(uint256 _new_affiliateSplit)
        external
        onlyOwner
    {
        require(
            _new_affiliateSplit <= 100,
            "Affiliate Split Value not allowed"
        );
        affiliateSplit = _new_affiliateSplit;
    }

    function set_affiliate(address _affiliate, bool _status)
        external
        onlyOwner
    {
        affiliates[_affiliate] = _status;
    }

    ///@notice Withdraw goodwill share, retaining affilliate share
    function withdrawTokens(address[] calldata tokens) external onlyOwner {
        for (uint256 i = 0; i < tokens.length; i++) {
            uint256 qty;

            if (tokens[i] == ETHAddress) {
                qty = address(this).balance - totalAffiliateBalance[tokens[i]];

                Address.sendValue(payable(owner()), qty);
            } else {
                qty =
                    IERC20(tokens[i]).balanceOf(address(this)) -
                    totalAffiliateBalance[tokens[i]];
                IERC20(tokens[i]).safeTransfer(owner(), qty);
            }
        }
    }

    ///@notice Withdraw affilliate share, retaining goodwill share
    function affilliateWithdraw(address[] calldata tokens) external {
        uint256 tokenBal;
        for (uint256 i = 0; i < tokens.length; i++) {
            tokenBal = affiliateBalance[msg.sender][tokens[i]];
            affiliateBalance[msg.sender][tokens[i]] = 0;
            totalAffiliateBalance[tokens[i]] =
                totalAffiliateBalance[tokens[i]] -
                tokenBal;

            if (tokens[i] == ETHAddress) {
                Address.sendValue(payable(msg.sender), tokenBal);
            } else {
                IERC20(tokens[i]).safeTransfer(msg.sender, tokenBal);
            }
        }
    }

    function setApprovedTargets(
        address[] calldata targets,
        bool[] calldata isApproved
    ) external onlyOwner {
        require(targets.length == isApproved.length, "Invalid Input length");

        for (uint256 i = 0; i < targets.length; i++) {
            approvedTargets[targets[i]] = isApproved[i];
        }
    }

    receive() external payable {
        require(msg.sender != tx.origin, "Do not send ETH directly");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transfer.selector, to, value)
        );
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
        );
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(token.approve.selector, spender, value)
        );
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(
                oldAllowance >= value,
                "SafeERC20: decreased allowance below zero"
            );
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(
                token,
                abi.encodeWithSelector(
                    token.approve.selector,
                    spender,
                    newAllowance
                )
            );
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata =
            address(token).functionCall(
                data,
                "SafeERC20: low-level call failed"
            );
        if (returndata.length > 0) {
            // Return data is optional
            // solhint-disable-next-line max-line-length
            require(
                abi.decode(returndata, (bool)),
                "SafeERC20: ERC20 operation did not succeed"
            );
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount)
        external
        returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(
            address(this).balance >= amount,
            "Address: insufficient balance"
        );

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(
            success,
            "Address: unable to send value, recipient may have reverted"
        );
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                "Address: low-level call with value failed"
            );
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(
            address(this).balance >= value,
            "Address: insufficient balance for call"
        );
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) =
            target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data)
        internal
        view
        returns (bytes memory)
    {
        return
            functionStaticCall(
                target,
                data,
                "Address: low-level static call failed"
            );
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data)
        internal
        returns (bytes memory)
    {
        return
            functionDelegateCall(
                target,
                data,
                "Address: low-level delegate call failed"
            );
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract swaps and bridges ETH/Tokens to Matic/Polygon
// SPDX-License-Identifier: GPLv2

pragma solidity ^0.8.0;

import "../../_base/ZapBaseV2.sol";

// PoS Bridge
interface IRootChainManager {
    function depositEtherFor(address user) external payable;

    function depositFor(
        address user,
        address rootToken,
        bytes calldata depositData
    ) external;

    function tokenToType(address) external returns (bytes32);

    function typeToPredicate(bytes32) external returns (address);
}

// Plasma Bridge
interface IDepositManager {
    function depositERC20ForUser(
        address _token,
        address _user,
        uint256 _amount
    ) external;
}

interface IWETH {
    function deposit() external payable;
}

contract Zapper_Matic_Bridge_V1_1 is ZapBaseV2 {
    using SafeERC20 for IERC20;

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    IRootChainManager public rootChainManager =
        IRootChainManager(0xA0c68C638235ee32657e8f720a23ceC1bFc77C77);
    IDepositManager public depositManager =
        IDepositManager(0x401F6c983eA34274ec46f84D70b31C151321188b);

    address private constant maticAddress =
        0x7D1AfA7B718fb893dB30A3aBc0Cfc608AaCfeBB0;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        _approveToken(maticAddress, address(depositManager));

        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    /**
    @notice Bridge from Ethereum to Matic
    @notice Use index 0 for primary swap and index 1 for matic swap
    @param fromToken Address of the token to swap from
    @param toToken Address of the token to bridge
    @param swapAmounts Quantites of fromToken to swap to toToken and matic
    @param minTokensRec Minimum acceptable quantity of swapped tokens and/or matic
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapBridge(
        address fromToken,
        address toToken,
        uint256[2] calldata swapAmounts,
        uint256[2] calldata minTokensRec,
        address[2] calldata swapTargets,
        bytes[2] calldata swapData,
        address affiliate
    ) external payable stopInEmergency {
        uint256[2] memory toInvest =
            _pullTokens(fromToken, swapAmounts, affiliate);

        if (swapAmounts[0] > 0) {
            // Token swap
            uint256 toTokenAmt =
                _fillQuote(
                    fromToken,
                    toInvest[0],
                    toToken,
                    swapTargets[0],
                    swapData[0]
                );
            require(toTokenAmt >= minTokensRec[0], "ERR: High Slippage 1");

            _bridgeToken(toToken, toTokenAmt);
        }

        // Matic swap
        if (swapAmounts[1] > 0) {
            uint256 maticAmount =
                _fillQuote(
                    fromToken,
                    toInvest[1],
                    maticAddress,
                    swapTargets[1],
                    swapData[1]
                );
            require(maticAmount >= minTokensRec[1], "ERR: High Slippage 2");

            _bridgeMatic(maticAmount);
        }
    }

    function _bridgeToken(address toToken, uint256 toTokenAmt) internal {
        if (toToken == address(0)) {
            rootChainManager.depositEtherFor{ value: toTokenAmt }(msg.sender);
        } else {
            bytes32 tokenType = rootChainManager.tokenToType(toToken);
            address predicate = rootChainManager.typeToPredicate(tokenType);
            _approveToken(toToken, predicate);
            rootChainManager.depositFor(
                msg.sender,
                toToken,
                abi.encode(toTokenAmt)
            );
        }
    }

    function _bridgeMatic(uint256 maticAmount) internal {
        depositManager.depositERC20ForUser(
            maticAddress,
            msg.sender,
            maticAmount
        );
    }

    // 0x Swap
    function _fillQuote(
        address fromToken,
        uint256 amount,
        address toToken,
        address swapTarget,
        bytes memory swapCallData
    ) internal returns (uint256 amtBought) {
        if (fromToken == wethTokenAddress && toToken == address(0)) {
            IWETH(wethTokenAddress).deposit{ value: amount }();
            return amount;
        }

        uint256 valueToSend;

        if (fromToken == toToken) {
            return amount;
        }

        if (fromToken == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromToken, swapTarget);
        }

        uint256 iniBal = _getBalance(toToken);
        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapCallData);
        require(success, "Error Swapping Tokens");
        uint256 finalBal = _getBalance(toToken);

        amtBought = finalBal - iniBal;
    }

    function _pullTokens(
        address fromToken,
        uint256[2] memory swapAmounts,
        address affiliate
    ) internal returns (uint256[2] memory toInvest) {
        if (fromToken == address(0)) {
            require(msg.value > 0, "No eth sent");
            require(
                swapAmounts[0] + (swapAmounts[1]) == msg.value,
                "msg.value != fromTokenAmounts"
            );
        } else {
            require(msg.value == 0, "Eth sent with token");

            // transfer token
            IERC20(fromToken).safeTransferFrom(
                msg.sender,
                address(this),
                swapAmounts[0] + (swapAmounts[1])
            );
        }

        if (swapAmounts[0] > 0) {
            toInvest[0] =
                swapAmounts[0] -
                (_subtractGoodwill(fromToken, swapAmounts[0], affiliate));
        }

        if (swapAmounts[1] > 0) {
            toInvest[1] =
                swapAmounts[1] -
                (_subtractGoodwill(fromToken, swapAmounts[1], affiliate));
        }
    }

    function _subtractGoodwill(
        address token,
        uint256 amount,
        address affiliate
    ) internal returns (uint256 totalGoodwillPortion) {
        bool whitelisted = feeWhitelist[msg.sender];
        if (!whitelisted && goodwill > 0) {
            totalGoodwillPortion = (amount * goodwill) / 10000;

            if (affiliates[affiliate]) {
                if (token == address(0)) {
                    token = ETHAddress;
                }

                uint256 affiliatePortion =
                    (totalGoodwillPortion * affiliateSplit) / 100;
                affiliateBalance[affiliate][token] += affiliatePortion;
                totalAffiliateBalance[token] += affiliatePortion;
            }
        }
    }
}

// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "./ZapBaseV2.sol";

abstract contract ZapOutBaseV3 is ZapBaseV2 {
    using SafeERC20 for IERC20;

    /**
        @dev Transfer tokens from msg.sender to this contract
        @param token The ERC20 token to transfer to this contract
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
        @return Quantity of tokens transferred to this contract
     */
    function _pullTokens(
        address token,
        uint256 amount,
        bool shouldSellEntireBalance
    ) internal returns (uint256) {
        if (shouldSellEntireBalance) {
            require(
                Address.isContract(msg.sender),
                "ERR: shouldSellEntireBalance is true for EOA"
            );

            uint256 allowance =
                IERC20(token).allowance(msg.sender, address(this));
            IERC20(token).safeTransferFrom(
                msg.sender,
                address(this),
                allowance
            );

            return allowance;
        } else {
            IERC20(token).safeTransferFrom(msg.sender, address(this), amount);

            return amount;
        }
    }

    function _subtractGoodwill(
        address token,
        uint256 amount,
        address affiliate,
        bool enableGoodwill
    ) internal returns (uint256 totalGoodwillPortion) {
        bool whitelisted = feeWhitelist[msg.sender];
        if (enableGoodwill && !whitelisted && goodwill > 0) {
            totalGoodwillPortion = (amount * goodwill) / 10000;

            if (affiliates[affiliate]) {
                if (token == address(0)) {
                    token = ETHAddress;
                }

                uint256 affiliatePortion =
                    (totalGoodwillPortion * affiliateSplit) / 100;
                affiliateBalance[affiliate][token] += affiliatePortion;
                totalAffiliateBalance[token] += affiliatePortion;
            }
        }
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract removes liquidity from yEarn Vaults to ETH or ERC20 Tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapOutBaseV3.sol";

interface IWETH {
    function withdraw(uint256 wad) external;
}

interface IYVault {
    function deposit(uint256) external;

    function withdraw(uint256) external;

    function getPricePerFullShare() external view returns (uint256);

    function token() external view returns (address);

    function decimals() external view returns (uint256);

    // V2
    function pricePerShare() external view returns (uint256);

    function permit(
        address owner,
        address spender,
        uint256 amount,
        uint256 expiry,
        bytes calldata signature
    ) external returns (bool);

    function name() external pure returns (string memory);

    function nonces(address owner) external view returns (uint256);
}

interface IYVaultV1Registry {
    function getVaults() external view returns (address[] memory);

    function getVaultsLength() external view returns (uint256);
}

// -- Aave --
interface IAToken {
    function redeem(uint256 _amount) external;

    function underlyingAssetAddress() external returns (address);
}

contract yVault_ZapOut_V3_0_1 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    IYVaultV1Registry V1Registry =
        IYVaultV1Registry(0x3eE41C098f9666ed2eA246f4D2558010e59d63A0);

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    uint256 private constant permitAllowance = 79228162514260000000000000000;

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    constructor(
        address _curveZapOut,
        uint256 _goodwill,
        uint256 _affiliateSplit
    ) ZapBaseV2(_goodwill, _affiliateSplit) {
        // Curve ZapOut
        approvedTargets[_curveZapOut] = true;
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    /**
        @notice Zap out in to a single token with permit
        @param fromVault Vault from which to remove liquidity
        @param amountIn Quantity of vault tokens to remove
        @param toToken Address of desired token
        @param isAaveUnderlying True if vault contains aave token
        @param minToTokens Minimum quantity of tokens to receive, reverts otherwise
        @param permitSig Encoded permit hash, which contains r,s,v values
        @param swapTarget Execution targets for swap or Zap
        @param swapData DEX or Zap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
        @return tokensReceived Quantity of tokens or ETH received
    */
    function ZapOutWithPermit(
        address fromVault,
        uint256 amountIn,
        address toToken,
        bool isAaveUnderlying,
        uint256 minToTokens,
        bytes calldata permitSig,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external returns (uint256 tokensReceived) {
        // permit
        _permit(fromVault, permitAllowance, permitSig);

        return
            ZapOut(
                fromVault,
                amountIn,
                toToken,
                isAaveUnderlying,
                minToTokens,
                swapTarget,
                swapData,
                affiliate,
                shouldSellEntireBalance
            );
    }

    function _permit(
        address fromVault,
        uint256 amountIn,
        bytes memory permitSig
    ) internal {
        bool success =
            IYVault(fromVault).permit(
                msg.sender,
                address(this),
                amountIn,
                deadline,
                permitSig
            );
        require(success, "Could Not Permit");
    }

    /**
        @notice Zap out in to a single token with permit
        @param fromVault Vault from which to remove liquidity
        @param amountIn Quantity of vault tokens to remove
        @param toToken Address of desired token
        @param isAaveUnderlying True if vault contains aave token
        @param minToTokens Minimum quantity of tokens to receive, reverts otherwise
        @param swapTarget Execution targets for swap or Zap
        @param swapData DEX or Zap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
        @return tokensReceived Quantity of tokens or ETH received
    */
    function ZapOut(
        address fromVault,
        uint256 amountIn,
        address toToken,
        bool isAaveUnderlying,
        uint256 minToTokens,
        address swapTarget,
        bytes memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensReceived) {
        _pullTokens(fromVault, amountIn, shouldSellEntireBalance);

        // get underlying token from vault
        address underlyingToken = IYVault(fromVault).token();
        uint256 underlyingTokenReceived =
            _vaultWithdraw(fromVault, amountIn, underlyingToken);

        // swap to toToken
        uint256 toTokenAmt;

        if (isAaveUnderlying) {
            address underlyingAsset =
                IAToken(underlyingToken).underlyingAssetAddress();
            // unwrap atoken
            IAToken(underlyingToken).redeem(underlyingTokenReceived);

            // aTokens are 1:1
            if (underlyingAsset == toToken) {
                toTokenAmt = underlyingTokenReceived;
            } else {
                toTokenAmt = _fillQuote(
                    underlyingAsset,
                    toToken,
                    underlyingTokenReceived,
                    swapTarget,
                    swapData
                );
            }
        } else {
            toTokenAmt = _fillQuote(
                underlyingToken,
                toToken,
                underlyingTokenReceived,
                swapTarget,
                swapData
            );
        }
        require(toTokenAmt >= minToTokens, "Err: High Slippage");

        uint256 totalGoodwillPortion =
            _subtractGoodwill(toToken, toTokenAmt, affiliate, true);
        tokensReceived = toTokenAmt - totalGoodwillPortion;

        // send toTokens
        if (toToken == address(0)) {
            Address.sendValue(payable(msg.sender), tokensReceived);
        } else {
            IERC20(toToken).safeTransfer(msg.sender, tokensReceived);
        }
        emit zapOut(msg.sender, fromVault, toToken, tokensReceived);
    }

    function _vaultWithdraw(
        address fromVault,
        uint256 amount,
        address underlyingVaultToken
    ) internal returns (uint256 underlyingReceived) {
        uint256 iniUnderlyingBal = _getBalance(underlyingVaultToken);

        IYVault(fromVault).withdraw(amount);

        underlyingReceived =
            _getBalance(underlyingVaultToken) -
            iniUnderlyingBal;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address toToken,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amtBought) {
        if (_fromTokenAddress == toToken) {
            return _amount;
        }

        if (_fromTokenAddress == wethTokenAddress && toToken == address(0)) {
            IWETH(wethTokenAddress).withdraw(_amount);
            return _amount;
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        uint256 iniBal = _getBalance(toToken);
        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");
        uint256 finalBal = _getBalance(toToken);

        require(finalBal > 0, "ERR: Swapped to wrong token");
        amtBought = finalBal - iniBal;
    }

    /**
        @notice Utility function to determine the quantity of underlying tokens removed from vault
        @param fromVault Yearn vault from which to remove liquidity
        @param liquidity Quantity of vault tokens to remove
        @return Quantity of underlying LP or token removed
    */
    function removeLiquidityReturn(address fromVault, uint256 liquidity)
        external
        view
        returns (uint256)
    {
        IYVault vault = IYVault(fromVault);

        address[] memory V1Vaults = V1Registry.getVaults();

        for (uint256 i = 0; i < V1Registry.getVaultsLength(); i++) {
            if (V1Vaults[i] == fromVault)
                return (liquidity * (vault.getPricePerFullShare())) / (10**18);
        }
        return (liquidity * (vault.pricePerShare())) / (10**vault.decimals());
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// Visit <https://www.gnu.org/licenses/>for a copy of the GNU Affero General Public License

///@author Zapper
///@notice this contract implements one click removal of liquidity from UniswapV2 pools, receiving ETH, ERC20 or both.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapOutBaseV3.sol";

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function balanceOf(address user) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IWETH {
    function withdraw(uint256 wad) external;
}

contract UniswapV2_ZapOut_General_V5 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    uint256 private constant permitAllowance = 79228162514260000000000000000;

    IUniswapV2Router02 private constant uniswapV2Router =
        IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
    IUniswapV2Factory private constant uniswapFactory =
        IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);

    address private constant wethTokenAddress =
        address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    /**
        @notice Zap out in both tokens
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param affiliate Affiliate address
        @return amountA Quantity of tokenA received after zapout
        @return amountB Quantity of tokenB received after zapout
    */
    function ZapOut2PairToken(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate
    ) public stopInEmergency returns (uint256 amountA, uint256 amountB) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        // get reserves
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(fromPoolAddress).safeTransferFrom(
            msg.sender,
            address(this),
            incomingLP
        );

        _approveToken(fromPoolAddress, address(uniswapV2Router), incomingLP);

        if (token0 == wethTokenAddress || token1 == wethTokenAddress) {
            address _token = token0 == wethTokenAddress ? token1 : token0;
            (amountA, amountB) = uniswapV2Router.removeLiquidityETH(
                _token,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenGoodwill =
                _subtractGoodwill(_token, amountA, affiliate, true);
            uint256 ethGoodwill =
                _subtractGoodwill(ETHAddress, amountB, affiliate, true);

            // send tokens
            IERC20(_token).safeTransfer(msg.sender, amountA - tokenGoodwill);
            Address.sendValue(payable(msg.sender), amountB - ethGoodwill);
        } else {
            (amountA, amountB) = uniswapV2Router.removeLiquidity(
                token0,
                token1,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenAGoodwill =
                _subtractGoodwill(token0, amountA, affiliate, true);
            uint256 tokenBGoodwill =
                _subtractGoodwill(token1, amountB, affiliate, true);

            // send tokens
            IERC20(token0).safeTransfer(msg.sender, amountA - tokenAGoodwill);
            IERC20(token1).safeTransfer(msg.sender, amountB - tokenBGoodwill);
        }
        emit zapOut(msg.sender, fromPoolAddress, token0, amountA);
        emit zapOut(msg.sender, fromPoolAddress, token1, amountB);
    }

    /**
        @notice Zap out in a single token
        @param toTokenAddress Address of desired token
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param minTokensRec Minimum quantity of tokens to receive
        @param swapTargets Execution targets for swaps
        @param swapData DEX swap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    */
    function ZapOut(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensRec) {
        (uint256 amount0, uint256 amount1) =
            _removeLiquidity(
                fromPoolAddress,
                incomingLP,
                shouldSellEntireBalance
            );

        //swaps tokens to token
        tokensRec = _swapTokens(
            fromPoolAddress,
            amount0,
            amount1,
            toTokenAddress,
            swapTargets,
            swapData
        );
        require(tokensRec >= minTokensRec, "High Slippage");

        uint256 totalGoodwillPortion;

        // transfer toTokens to sender
        if (toTokenAddress == address(0)) {
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                tokensRec,
                affiliate,
                true
            );

            payable(msg.sender).transfer(tokensRec - totalGoodwillPortion);
        } else {
            totalGoodwillPortion = _subtractGoodwill(
                toTokenAddress,
                tokensRec,
                affiliate,
                true
            );

            IERC20(toTokenAddress).safeTransfer(
                msg.sender,
                tokensRec - totalGoodwillPortion
            );
        }

        tokensRec = tokensRec - totalGoodwillPortion;

        emit zapOut(msg.sender, fromPoolAddress, toTokenAddress, tokensRec);

        return tokensRec;
    }

    /**
    @notice Zap out in both tokens with permit
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param affiliate Affiliate address to share fees
    @param permitSig Signature for permit
    @return amountA Quantity of tokenA received
    @return amountB Quantity of tokenB received
    */
    function ZapOut2PairTokenWithPermit(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate,
        bytes calldata permitSig
    ) external stopInEmergency returns (uint256 amountA, uint256 amountB) {
        _permit(fromPoolAddress, permitAllowance, permitSig);

        (amountA, amountB) = ZapOut2PairToken(
            fromPoolAddress,
            incomingLP,
            affiliate
        );
    }

    /**
    @notice Zap out in a single token with permit
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param permitSig Signature for permit
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapOutWithPermit(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        bytes calldata permitSig,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate
    ) public stopInEmergency returns (uint256) {
        // permit
        _permit(fromPoolAddress, permitAllowance, permitSig);

        return (
            ZapOut(
                toTokenAddress,
                fromPoolAddress,
                incomingLP,
                minTokensRec,
                swapTargets,
                swapData,
                affiliate,
                false
            )
        );
    }

    function _permit(
        address fromPoolAddress,
        uint256 amountIn,
        bytes memory permitSig
    ) internal {
        require(permitSig.length == 65, "Invalid signature length");

        bytes32 r;
        bytes32 s;
        uint8 v;
        assembly {
            r := mload(add(permitSig, 32))
            s := mload(add(permitSig, 64))
            v := byte(0, mload(add(permitSig, 96)))
        }
        IUniswapV2Pair(fromPoolAddress).permit(
            msg.sender,
            address(this),
            amountIn,
            deadline,
            v,
            r,
            s
        );
    }

    function _removeLiquidity(
        address fromPoolAddress,
        uint256 incomingLP,
        bool shouldSellEntireBalance
    ) internal returns (uint256 amount0, uint256 amount1) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        address token0 = pair.token0();
        address token1 = pair.token1();

        _pullTokens(fromPoolAddress, incomingLP, shouldSellEntireBalance);

        _approveToken(fromPoolAddress, address(uniswapV2Router), incomingLP);

        (amount0, amount1) = uniswapV2Router.removeLiquidity(
            token0,
            token1,
            incomingLP,
            1,
            1,
            address(this),
            deadline
        );
        require(amount0 > 0 && amount1 > 0, "Removed Insufficient Liquidity");
    }

    function _swapTokens(
        address fromPoolAddress,
        uint256 amount0,
        uint256 amount1,
        address toToken,
        address[] memory swapTargets,
        bytes[] memory swapData
    ) internal returns (uint256 tokensBought) {
        address token0 = IUniswapV2Pair(fromPoolAddress).token0();
        address token1 = IUniswapV2Pair(fromPoolAddress).token1();

        //swap token0 to toToken
        if (token0 == toToken) {
            tokensBought = tokensBought + amount0;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token0,
                    toToken,
                    amount0,
                    swapTargets[0],
                    swapData[0]
                );
        }

        //swap token1 to toToken
        if (token1 == toToken) {
            tokensBought = tokensBought + amount1;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token1,
                    toToken,
                    amount1,
                    swapTargets[1],
                    swapData[1]
                );
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toToken,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256) {
        if (fromTokenAddress == wethTokenAddress && toToken == address(0)) {
            IWETH(wethTokenAddress).withdraw(amount);
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toToken);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        uint256 finalBalance = _getBalance(toToken) - initialBalance;

        require(finalBalance > 0, "Swapped to Invalid Intermediate");

        return finalBalance;
    }

    /**
        @notice Utility function to determine quantity and addresses of tokens being removed
        @param fromPoolAddress Pool from which to remove liquidity
        @param liquidity Quantity of LP tokens to remove.
        @return amountA Quantity of tokenA removed
        @return amountB Quantity of tokenB removed
        @return token0 Address of the underlying token to be removed
        @return token1 Address of the underlying token to be removed
    */
    function removeLiquidityReturn(address fromPoolAddress, uint256 liquidity)
        external
        view
        returns (
            uint256 amountA,
            uint256 amountB,
            address token0,
            address token1
        )
    {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);
        token0 = pair.token0();
        token1 = pair.token1();

        uint256 balance0 = IERC20(token0).balanceOf(fromPoolAddress);
        uint256 balance1 = IERC20(token1).balanceOf(fromPoolAddress);

        uint256 _totalSupply = pair.totalSupply();

        amountA = (liquidity * balance0) / _totalSupply;
        amountB = (liquidity * balance1) / _totalSupply;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// Visit <https://www.gnu.org/licenses/>for a copy of the GNU Affero General Public License

///@author Zapper
///@notice this contract implements one click removal of liquidity from Sushiswap pools, receiving ETH, ERC20 or both.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapOutBaseV3.sol";

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function balanceOf(address user) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IWETH {
    function withdraw(uint256 wad) external;
}

contract Sushiswap_ZapOut_General_V4 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    uint256 private constant permitAllowance = 79228162514260000000000000000;

    IUniswapV2Router02 private constant sushiswapRouter =
        IUniswapV2Router02(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F);
    IUniswapV2Factory private constant sushiswapFactory =
        IUniswapV2Factory(0xC0AEe478e3658e2610c5F7A4A2E1777cE9e4f2Ac);

    address private constant wethTokenAddress =
        address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    /**
        @notice Zap out in both tokens
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param affiliate Affiliate address
        @return amountA Quantity of tokenA received after zapout
        @return amountB Quantity of tokenB received after zapout
    */
    function ZapOut2PairToken(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate
    ) public stopInEmergency returns (uint256 amountA, uint256 amountB) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        // get reserves
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(fromPoolAddress).safeTransferFrom(
            msg.sender,
            address(this),
            incomingLP
        );

        _approveToken(fromPoolAddress, address(sushiswapRouter), incomingLP);

        if (token0 == wethTokenAddress || token1 == wethTokenAddress) {
            address _token = token0 == wethTokenAddress ? token1 : token0;
            (amountA, amountB) = sushiswapRouter.removeLiquidityETH(
                _token,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenGoodwill =
                _subtractGoodwill(_token, amountA, affiliate, true);
            uint256 ethGoodwill =
                _subtractGoodwill(ETHAddress, amountB, affiliate, true);

            // send tokens
            IERC20(_token).safeTransfer(msg.sender, amountA - tokenGoodwill);
            Address.sendValue(payable(msg.sender), amountB - ethGoodwill);
        } else {
            (amountA, amountB) = sushiswapRouter.removeLiquidity(
                token0,
                token1,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenAGoodwill =
                _subtractGoodwill(token0, amountA, affiliate, true);
            uint256 tokenBGoodwill =
                _subtractGoodwill(token1, amountB, affiliate, true);

            // send tokens
            IERC20(token0).safeTransfer(msg.sender, amountA - tokenAGoodwill);
            IERC20(token1).safeTransfer(msg.sender, amountB - tokenBGoodwill);
        }
        emit zapOut(msg.sender, fromPoolAddress, token0, amountA);
        emit zapOut(msg.sender, fromPoolAddress, token1, amountB);
    }

    /**
    @notice Zap out in a single token
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    */
    function ZapOut(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensRec) {
        (uint256 amount0, uint256 amount1) =
            _removeLiquidity(
                fromPoolAddress,
                incomingLP,
                shouldSellEntireBalance
            );

        //swaps tokens to token
        tokensRec = _swapTokens(
            fromPoolAddress,
            amount0,
            amount1,
            toTokenAddress,
            swapTargets,
            swapData
        );
        require(tokensRec >= minTokensRec, "High Slippage");

        uint256 totalGoodwillPortion;

        // transfer toTokens to sender
        if (toTokenAddress == address(0)) {
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                tokensRec,
                affiliate,
                true
            );

            payable(msg.sender).transfer(tokensRec - totalGoodwillPortion);
        } else {
            totalGoodwillPortion = _subtractGoodwill(
                toTokenAddress,
                tokensRec,
                affiliate,
                true
            );

            IERC20(toTokenAddress).safeTransfer(
                msg.sender,
                tokensRec - totalGoodwillPortion
            );
        }

        tokensRec = tokensRec - totalGoodwillPortion;

        emit zapOut(msg.sender, fromPoolAddress, toTokenAddress, tokensRec);

        return tokensRec;
    }

    /**
    @notice Zap out in both tokens with permit
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param affiliate Affiliate address to share fees
    @param permitSig Signature for permit
    @return amountA Quantity of tokenA received
    @return amountB Quantity of tokenB received
    */
    function ZapOut2PairTokenWithPermit(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate,
        bytes calldata permitSig
    ) external stopInEmergency returns (uint256 amountA, uint256 amountB) {
        // permit
        _permit(fromPoolAddress, permitAllowance, permitSig);

        (amountA, amountB) = ZapOut2PairToken(
            fromPoolAddress,
            incomingLP,
            affiliate
        );
    }

    /**
    @notice Zap out in a single token with permit
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapOutWithPermit(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        bytes calldata permitSig,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate
    ) public stopInEmergency returns (uint256) {
        // permit
        _permit(fromPoolAddress, permitAllowance, permitSig);

        return (
            ZapOut(
                toTokenAddress,
                fromPoolAddress,
                incomingLP,
                minTokensRec,
                swapTargets,
                swapData,
                affiliate,
                false
            )
        );
    }

    function _permit(
        address fromPoolAddress,
        uint256 amountIn,
        bytes memory permitSig
    ) internal {
        require(permitSig.length == 65, "Invalid signature length");

        bytes32 r;
        bytes32 s;
        uint8 v;
        assembly {
            r := mload(add(permitSig, 32))
            s := mload(add(permitSig, 64))
            v := byte(0, mload(add(permitSig, 96)))
        }
        IUniswapV2Pair(fromPoolAddress).permit(
            msg.sender,
            address(this),
            amountIn,
            deadline,
            v,
            r,
            s
        );
    }

    function _removeLiquidity(
        address fromPoolAddress,
        uint256 incomingLP,
        bool shouldSellEntireBalance
    ) internal returns (uint256 amount0, uint256 amount1) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        address token0 = pair.token0();
        address token1 = pair.token1();

        _pullTokens(fromPoolAddress, incomingLP, shouldSellEntireBalance);

        _approveToken(fromPoolAddress, address(sushiswapRouter), incomingLP);

        (amount0, amount1) = sushiswapRouter.removeLiquidity(
            token0,
            token1,
            incomingLP,
            1,
            1,
            address(this),
            deadline
        );
        require(amount0 > 0 && amount1 > 0, "Removed Insufficient Liquidity");
    }

    function _swapTokens(
        address fromPoolAddress,
        uint256 amount0,
        uint256 amount1,
        address toToken,
        address[] memory swapTargets,
        bytes[] memory swapData
    ) internal returns (uint256 tokensBought) {
        address token0 = IUniswapV2Pair(fromPoolAddress).token0();
        address token1 = IUniswapV2Pair(fromPoolAddress).token1();

        //swap token0 to toToken
        if (token0 == toToken) {
            tokensBought = tokensBought + amount0;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token0,
                    toToken,
                    amount0,
                    swapTargets[0],
                    swapData[0]
                );
        }

        //swap token1 to toToken
        if (token1 == toToken) {
            tokensBought = tokensBought + amount1;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token1,
                    toToken,
                    amount1,
                    swapTargets[1],
                    swapData[1]
                );
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toToken,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256) {
        if (fromTokenAddress == wethTokenAddress && toToken == address(0)) {
            IWETH(wethTokenAddress).withdraw(amount);
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toToken);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        uint256 finalBalance = _getBalance(toToken) - initialBalance;

        require(finalBalance > 0, "Swapped to Invalid Intermediate");

        return finalBalance;
    }

    /**
        @notice Utility function to determine quantity and addresses of tokens being removed
        @param fromPoolAddress Pool from which to remove liquidity
        @param liquidity Quantity of LP tokens to remove.
        @return amountA Quantity of tokenA removed
        @return amountB Quantity of tokenB removed
        @return token0 Address of the underlying token to be removed
        @return token1 Address of the underlying token to be removed
    */
    function removeLiquidityReturn(address fromPoolAddress, uint256 liquidity)
        external
        view
        returns (
            uint256 amountA,
            uint256 amountB,
            address token0,
            address token1
        )
    {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);
        token0 = pair.token0();
        token1 = pair.token1();

        uint256 balance0 = IERC20(token0).balanceOf(fromPoolAddress);
        uint256 balance1 = IERC20(token1).balanceOf(fromPoolAddress);

        uint256 _totalSupply = pair.totalSupply();

        amountA = (liquidity * balance0) / _totalSupply;
        amountB = (liquidity * balance1) / _totalSupply;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// Visit <https://www.gnu.org/licenses/>for a copy of the GNU Affero General Public License

///@author Zapper
///@notice this contract removes liquidity from Sushiswap pools on Polygon (Matic), receiving ETH, ERC20 or both.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapOutBaseV3.sol";

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function balanceOf(address user) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IWETH {
    function withdraw(uint256 wad) external;
}

contract Sushiswap_ZapOut_Polygon_V3 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    uint256 private constant permitAllowance = 79228162514260000000000000000;

    IUniswapV2Router02 private constant sushiswapRouter =
        IUniswapV2Router02(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506);
    IUniswapV2Factory private constant sushiswapFactory =
        IUniswapV2Factory(0xc35DADB65012eC5796536bD9864eD8773aBc74C4);

    address private constant wmaticTokenAddress =
        address(0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270);

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    /**
        @notice Zap out in both tokens
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param affiliate Affiliate address
        @return amountA Quantity of tokenA received after zapout
        @return amountB Quantity of tokenB received after zapout
    */
    function ZapOut2PairToken(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate
    ) public stopInEmergency returns (uint256 amountA, uint256 amountB) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        // get reserves
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(fromPoolAddress).safeTransferFrom(
            msg.sender,
            address(this),
            incomingLP
        );

        _approveToken(fromPoolAddress, address(sushiswapRouter), incomingLP);

        if (token0 == wmaticTokenAddress || token1 == wmaticTokenAddress) {
            address _token = token0 == wmaticTokenAddress ? token1 : token0;
            (amountA, amountB) = sushiswapRouter.removeLiquidityETH(
                _token,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenGoodwill =
                _subtractGoodwill(_token, amountA, affiliate, true);
            uint256 ethGoodwill =
                _subtractGoodwill(ETHAddress, amountB, affiliate, true);

            // send tokens
            IERC20(_token).safeTransfer(msg.sender, amountA - tokenGoodwill);
            Address.sendValue(payable(msg.sender), amountB - ethGoodwill);
        } else {
            (amountA, amountB) = sushiswapRouter.removeLiquidity(
                token0,
                token1,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenAGoodwill =
                _subtractGoodwill(token0, amountA, affiliate, true);
            uint256 tokenBGoodwill =
                _subtractGoodwill(token1, amountB, affiliate, true);

            // send tokens
            IERC20(token0).safeTransfer(msg.sender, amountA - tokenAGoodwill);
            IERC20(token1).safeTransfer(msg.sender, amountB - tokenBGoodwill);
        }
        emit zapOut(msg.sender, fromPoolAddress, token0, amountA);
        emit zapOut(msg.sender, fromPoolAddress, token1, amountB);
    }

    /**
    @notice Zap out in a single token
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    */
    function ZapOut(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensRec) {
        (uint256 amount0, uint256 amount1) =
            _removeLiquidity(
                fromPoolAddress,
                incomingLP,
                shouldSellEntireBalance
            );

        //swaps tokens to token
        tokensRec = _swapTokens(
            fromPoolAddress,
            amount0,
            amount1,
            toTokenAddress,
            swapTargets,
            swapData
        );
        require(tokensRec >= minTokensRec, "High Slippage");

        uint256 totalGoodwillPortion;

        // transfer toTokens to sender
        if (toTokenAddress == address(0)) {
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                tokensRec,
                affiliate,
                true
            );

            payable(msg.sender).transfer(tokensRec - totalGoodwillPortion);
        } else {
            totalGoodwillPortion = _subtractGoodwill(
                toTokenAddress,
                tokensRec,
                affiliate,
                true
            );

            IERC20(toTokenAddress).safeTransfer(
                msg.sender,
                tokensRec - totalGoodwillPortion
            );
        }

        tokensRec = tokensRec - totalGoodwillPortion;

        emit zapOut(msg.sender, fromPoolAddress, toTokenAddress, tokensRec);

        return tokensRec;
    }

    /**
    @notice Zap out in both tokens with permit
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param affiliate Affiliate address to share fees
    @param permitSig Signature for permit
    @return amountA Quantity of tokenA received
    @return amountB Quantity of tokenB received
    */
    function ZapOut2PairTokenWithPermit(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate,
        bytes calldata permitSig
    ) external stopInEmergency returns (uint256 amountA, uint256 amountB) {
        // permit
        _permit(fromPoolAddress, permitAllowance, permitSig);

        (amountA, amountB) = ZapOut2PairToken(
            fromPoolAddress,
            incomingLP,
            affiliate
        );
    }

    /**
    @notice Zap out in a single token with permit
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param permitSig Signature for permit
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapOutWithPermit(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        bytes calldata permitSig,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate
    ) public stopInEmergency returns (uint256) {
        // permit
        _permit(fromPoolAddress, permitAllowance, permitSig);

        return (
            ZapOut(
                toTokenAddress,
                fromPoolAddress,
                incomingLP,
                minTokensRec,
                swapTargets,
                swapData,
                affiliate,
                false
            )
        );
    }

    function _permit(
        address fromPoolAddress,
        uint256 amountIn,
        bytes memory permitSig
    ) internal {
        require(permitSig.length == 65, "Invalid signature length");

        bytes32 r;
        bytes32 s;
        uint8 v;
        assembly {
            r := mload(add(permitSig, 32))
            s := mload(add(permitSig, 64))
            v := byte(0, mload(add(permitSig, 96)))
        }
        IUniswapV2Pair(fromPoolAddress).permit(
            msg.sender,
            address(this),
            amountIn,
            deadline,
            v,
            r,
            s
        );
    }

    function _removeLiquidity(
        address fromPoolAddress,
        uint256 incomingLP,
        bool shouldSellEntireBalance
    ) internal returns (uint256 amount0, uint256 amount1) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        address token0 = pair.token0();
        address token1 = pair.token1();

        _pullTokens(fromPoolAddress, incomingLP, shouldSellEntireBalance);

        _approveToken(fromPoolAddress, address(sushiswapRouter), incomingLP);

        (amount0, amount1) = sushiswapRouter.removeLiquidity(
            token0,
            token1,
            incomingLP,
            1,
            1,
            address(this),
            deadline
        );
        require(amount0 > 0 && amount1 > 0, "Removed Insufficient Liquidity");
    }

    function _swapTokens(
        address fromPoolAddress,
        uint256 amount0,
        uint256 amount1,
        address toToken,
        address[] memory swapTargets,
        bytes[] memory swapData
    ) internal returns (uint256 tokensBought) {
        address token0 = IUniswapV2Pair(fromPoolAddress).token0();
        address token1 = IUniswapV2Pair(fromPoolAddress).token1();

        //swap token0 to toToken
        if (token0 == toToken) {
            tokensBought = tokensBought + amount0;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token0,
                    toToken,
                    amount0,
                    swapTargets[0],
                    swapData[0]
                );
        }

        //swap token1 to toToken
        if (token1 == toToken) {
            tokensBought = tokensBought + amount1;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token1,
                    toToken,
                    amount1,
                    swapTargets[1],
                    swapData[1]
                );
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toToken,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256) {
        if (fromTokenAddress == wmaticTokenAddress && toToken == address(0)) {
            IWETH(wmaticTokenAddress).withdraw(amount);
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toToken);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        uint256 finalBalance = _getBalance(toToken) - initialBalance;

        require(finalBalance > 0, "Swapped to Invalid Intermediate");

        return finalBalance;
    }

    /**
        @notice Utility function to determine quantity and addresses of tokens being removed
        @param fromPoolAddress Pool from which to remove liquidity
        @param liquidity Quantity of LP tokens to remove.
        @return amountA Quantity of tokenA removed
        @return amountB Quantity of tokenB removed
        @return token0 Address of the underlying token to be removed
        @return token1 Address of the underlying token to be removed
    */
    function removeLiquidityReturn(address fromPoolAddress, uint256 liquidity)
        external
        view
        returns (
            uint256 amountA,
            uint256 amountB,
            address token0,
            address token1
        )
    {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);
        token0 = pair.token0();
        token1 = pair.token1();

        uint256 balance0 = IERC20(token0).balanceOf(fromPoolAddress);
        uint256 balance1 = IERC20(token1).balanceOf(fromPoolAddress);

        uint256 _totalSupply = pair.totalSupply();

        amountA = (liquidity * balance0) / _totalSupply;
        amountB = (liquidity * balance1) / _totalSupply;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// Visit <https://www.gnu.org/licenses/>for a copy of the GNU Affero General Public License

///@author Zapper
///@notice this contract removes liquidity from Quickswap pools on Polygon (Matic), receiving ETH, ERC20 or both.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapOutBaseV3.sol";

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function balanceOf(address user) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IWETH {
    function withdraw(uint256 wad) external;
}

contract Quickswap_ZapOut_V1 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    IUniswapV2Router02 private constant quickswapRouter =
        IUniswapV2Router02(0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff);
    IUniswapV2Factory private constant quickswapFactory =
        IUniswapV2Factory(0x5757371414417b8C6CAad45bAeF941aBc7d3Ab32);

    address private constant wmaticTokenAddress =
        address(0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270);

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    /**
        @notice Zap out in both tokens
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param affiliate Affiliate address
        @return amountA Quantity of tokenA received after zapout
        @return amountB Quantity of tokenB received after zapout
    */
    function ZapOut2PairToken(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate
    ) public stopInEmergency returns (uint256 amountA, uint256 amountB) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        // get reserves
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(fromPoolAddress).safeTransferFrom(
            msg.sender,
            address(this),
            incomingLP
        );

        _approveToken(fromPoolAddress, address(quickswapRouter), incomingLP);

        if (token0 == wmaticTokenAddress || token1 == wmaticTokenAddress) {
            address _token = token0 == wmaticTokenAddress ? token1 : token0;
            (amountA, amountB) = quickswapRouter.removeLiquidityETH(
                _token,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenGoodwill =
                _subtractGoodwill(_token, amountA, affiliate, true);
            uint256 ethGoodwill =
                _subtractGoodwill(ETHAddress, amountB, affiliate, true);

            // send tokens
            IERC20(_token).safeTransfer(msg.sender, amountA - tokenGoodwill);
            Address.sendValue(payable(msg.sender), amountB - ethGoodwill);
        } else {
            (amountA, amountB) = quickswapRouter.removeLiquidity(
                token0,
                token1,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenAGoodwill =
                _subtractGoodwill(token0, amountA, affiliate, true);
            uint256 tokenBGoodwill =
                _subtractGoodwill(token1, amountB, affiliate, true);

            // send tokens
            IERC20(token0).safeTransfer(msg.sender, amountA - tokenAGoodwill);
            IERC20(token1).safeTransfer(msg.sender, amountB - tokenBGoodwill);
        }
        emit zapOut(msg.sender, fromPoolAddress, token0, amountA);
        emit zapOut(msg.sender, fromPoolAddress, token1, amountB);
    }

    /**
    @notice Zap out in a single token
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    */
    function ZapOut(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensRec) {
        (uint256 amount0, uint256 amount1) =
            _removeLiquidity(
                fromPoolAddress,
                incomingLP,
                shouldSellEntireBalance
            );

        //swaps tokens to token
        tokensRec = _swapTokens(
            fromPoolAddress,
            amount0,
            amount1,
            toTokenAddress,
            swapTargets,
            swapData
        );
        require(tokensRec >= minTokensRec, "High Slippage");

        uint256 totalGoodwillPortion;

        // transfer toTokens to sender
        if (toTokenAddress == address(0)) {
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                tokensRec,
                affiliate,
                true
            );

            payable(msg.sender).transfer(tokensRec - totalGoodwillPortion);
        } else {
            totalGoodwillPortion = _subtractGoodwill(
                toTokenAddress,
                tokensRec,
                affiliate,
                true
            );

            IERC20(toTokenAddress).safeTransfer(
                msg.sender,
                tokensRec - totalGoodwillPortion
            );
        }

        tokensRec = tokensRec - totalGoodwillPortion;

        emit zapOut(msg.sender, fromPoolAddress, toTokenAddress, tokensRec);

        return tokensRec;
    }

    /**
    @notice Zap out in both tokens with permit
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param affiliate Affiliate address to share fees
    @param permitData Encoded permit data, which contains owner, spender, value, deadline, r,s,v values 
    @return amountA Quantity of tokenA received
    @return amountB Quantity of tokenB received
    */
    function ZapOut2PairTokenWithPermit(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate,
        bytes calldata permitData
    ) external stopInEmergency returns (uint256 amountA, uint256 amountB) {
        // permit
        _validatePool(fromPoolAddress);
        (bool success, ) = fromPoolAddress.call(permitData);
        require(success, "Could Not Permit");

        (amountA, amountB) = ZapOut2PairToken(
            fromPoolAddress,
            incomingLP,
            affiliate
        );
    }

    /**
    @notice Zap out in a single token with permit
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapOutWithPermit(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        bytes memory permitData,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate
    ) public stopInEmergency returns (uint256) {
        // permit
        _validatePool(fromPoolAddress);
        (bool success, ) = fromPoolAddress.call(permitData);
        require(success, "Could Not Permit");

        return (
            ZapOut(
                toTokenAddress,
                fromPoolAddress,
                incomingLP,
                minTokensRec,
                swapTargets,
                swapData,
                affiliate,
                false
            )
        );
    }

    function _validatePool(address poolAddress) internal view {
        IUniswapV2Pair pair = IUniswapV2Pair(poolAddress);
        address token0 = pair.token0();
        address token1 = pair.token1();

        address retrievedAddress = quickswapFactory.getPair(token0, token1);

        require(retrievedAddress == poolAddress, "Invalid Pool Address");
    }

    function _removeLiquidity(
        address fromPoolAddress,
        uint256 incomingLP,
        bool shouldSellEntireBalance
    ) internal returns (uint256 amount0, uint256 amount1) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        address token0 = pair.token0();
        address token1 = pair.token1();

        _pullTokens(fromPoolAddress, incomingLP, shouldSellEntireBalance);

        _approveToken(fromPoolAddress, address(quickswapRouter), incomingLP);

        (amount0, amount1) = quickswapRouter.removeLiquidity(
            token0,
            token1,
            incomingLP,
            1,
            1,
            address(this),
            deadline
        );
        require(amount0 > 0 && amount1 > 0, "Removed Insufficient Liquidity");
    }

    function _swapTokens(
        address fromPoolAddress,
        uint256 amount0,
        uint256 amount1,
        address toToken,
        address[] memory swapTargets,
        bytes[] memory swapData
    ) internal returns (uint256 tokensBought) {
        address token0 = IUniswapV2Pair(fromPoolAddress).token0();
        address token1 = IUniswapV2Pair(fromPoolAddress).token1();

        //swap token0 to toToken
        if (token0 == toToken) {
            tokensBought = tokensBought + amount0;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token0,
                    toToken,
                    amount0,
                    swapTargets[0],
                    swapData[0]
                );
        }

        //swap token1 to toToken
        if (token1 == toToken) {
            tokensBought = tokensBought + amount1;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token1,
                    toToken,
                    amount1,
                    swapTargets[1],
                    swapData[1]
                );
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toToken,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256) {
        if (fromTokenAddress == wmaticTokenAddress && toToken == address(0)) {
            IWETH(wmaticTokenAddress).withdraw(amount);
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toToken);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        uint256 finalBalance = _getBalance(toToken) - initialBalance;

        require(finalBalance > 0, "Swapped to Invalid Intermediate");

        return finalBalance;
    }

    /**
        @notice Utility function to determine quantity and addresses of tokens being removed
        @param fromPoolAddress Pool from which to remove liquidity
        @param liquidity Quantity of LP tokens to remove.
        @return amountA Quantity of tokenA removed
        @return amountB Quantity of tokenB removed
        @return token0 Address of the underlying token to be removed
        @return token1 Address of the underlying token to be removed
    */
    function removeLiquidityReturn(address fromPoolAddress, uint256 liquidity)
        external
        view
        returns (
            uint256 amountA,
            uint256 amountB,
            address token0,
            address token1
        )
    {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);
        token0 = pair.token0();
        token1 = pair.token1();

        uint256 balance0 = IERC20(token0).balanceOf(fromPoolAddress);
        uint256 balance1 = IERC20(token1).balanceOf(fromPoolAddress);

        uint256 _totalSupply = pair.totalSupply();

        amountA = (liquidity * balance0) / _totalSupply;
        amountB = (liquidity * balance1) / _totalSupply;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// Visit <https://www.gnu.org/licenses/>for a copy of the GNU Affero General Public License

///@author Zapper
///@notice this contract removes liquidity from Pancakeswap pools on BSC, receiving ETH, tokens or both.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapOutBaseV3.sol";

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);
}

interface IUniswapV2Router02 {
    function WETH() external pure returns (address);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function balanceOf(address user) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IWETH {
    function withdraw(uint256 wad) external;
}

contract Pancakeswap_ZapOut_V2_1 is ZapOutBaseV3 {
    using SafeERC20 for IERC20;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    IUniswapV2Router02 private constant pancakeswapRouter =
        IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
    IUniswapV2Factory private constant pancakeswapFactoryAddress =
        IUniswapV2Factory(0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73);

    address private constant wbnbTokenAddress =
        0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapOut(
        address sender,
        address pool,
        address token,
        uint256 tokensRec
    );

    /**
        @notice Zap out in both tokens
        @param fromPoolAddress Pool from which to remove liquidity
        @param incomingLP Quantity of LP to remove from pool
        @param affiliate Affiliate address
        @return amountA Quantity of tokenA received after zapout
        @return amountB Quantity of tokenB received after zapout
    */
    function ZapOut2PairToken(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate
    ) public stopInEmergency returns (uint256 amountA, uint256 amountB) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        // get reserves
        address token0 = pair.token0();
        address token1 = pair.token1();

        IERC20(fromPoolAddress).safeTransferFrom(
            msg.sender,
            address(this),
            incomingLP
        );

        _approveToken(fromPoolAddress, address(pancakeswapRouter), incomingLP);

        if (token0 == wbnbTokenAddress || token1 == wbnbTokenAddress) {
            address _token = token0 == wbnbTokenAddress ? token1 : token0;
            (amountA, amountB) = pancakeswapRouter.removeLiquidityETH(
                _token,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenGoodwill =
                _subtractGoodwill(_token, amountA, affiliate, true);
            uint256 ethGoodwill =
                _subtractGoodwill(ETHAddress, amountB, affiliate, true);

            // send tokens
            IERC20(_token).safeTransfer(msg.sender, amountA - tokenGoodwill);
            Address.sendValue(payable(msg.sender), amountB - ethGoodwill);
        } else {
            (amountA, amountB) = pancakeswapRouter.removeLiquidity(
                token0,
                token1,
                incomingLP,
                1,
                1,
                address(this),
                deadline
            );

            // subtract goodwill
            uint256 tokenAGoodwill =
                _subtractGoodwill(token0, amountA, affiliate, true);
            uint256 tokenBGoodwill =
                _subtractGoodwill(token1, amountB, affiliate, true);

            // send tokens
            IERC20(token0).safeTransfer(msg.sender, amountA - tokenAGoodwill);
            IERC20(token1).safeTransfer(msg.sender, amountB - tokenBGoodwill);
        }
        emit zapOut(msg.sender, fromPoolAddress, token0, amountA);
        emit zapOut(msg.sender, fromPoolAddress, token1, amountB);
    }

    /**
    @notice Zap out in a single token
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    */
    function ZapOut(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) public stopInEmergency returns (uint256 tokensRec) {
        (uint256 amount0, uint256 amount1) =
            _removeLiquidity(
                fromPoolAddress,
                incomingLP,
                shouldSellEntireBalance
            );

        //swaps tokens to token
        tokensRec = _swapTokens(
            fromPoolAddress,
            amount0,
            amount1,
            toTokenAddress,
            swapTargets,
            swapData
        );
        require(tokensRec >= minTokensRec, "High Slippage");

        uint256 totalGoodwillPortion;

        // transfer toTokens to sender
        if (toTokenAddress == address(0)) {
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                tokensRec,
                affiliate,
                true
            );

            payable(msg.sender).transfer(tokensRec - totalGoodwillPortion);
        } else {
            totalGoodwillPortion = _subtractGoodwill(
                toTokenAddress,
                tokensRec,
                affiliate,
                true
            );

            IERC20(toTokenAddress).safeTransfer(
                msg.sender,
                tokensRec - totalGoodwillPortion
            );
        }

        tokensRec = tokensRec - totalGoodwillPortion;

        emit zapOut(msg.sender, fromPoolAddress, toTokenAddress, tokensRec);

        return tokensRec;
    }

    /**
    @notice Zap out in both tokens with permit
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param affiliate Affiliate address to share fees
    @param permitData Encoded permit data, which contains owner, spender, value, deadline, r,s,v values 
    @return amountA Quantity of tokenA received
    @return amountB Quantity of tokenB received
    */
    function ZapOut2PairTokenWithPermit(
        address fromPoolAddress,
        uint256 incomingLP,
        address affiliate,
        bytes calldata permitData
    ) external stopInEmergency returns (uint256 amountA, uint256 amountB) {
        // permit
        _validatePool(fromPoolAddress);
        (bool success, ) = fromPoolAddress.call(permitData);
        require(success, "Could Not Permit");

        (amountA, amountB) = ZapOut2PairToken(
            fromPoolAddress,
            incomingLP,
            affiliate
        );
    }

    /**
    @notice Zap out in a single token with permit
    @param toTokenAddress Address of desired token
    @param fromPoolAddress Pool from which to remove liquidity
    @param incomingLP Quantity of LP to remove from pool
    @param minTokensRec Minimum quantity of tokens to receive
    @param swapTargets Execution targets for swaps
    @param swapData DEX swap data
    @param affiliate Affiliate address
    */
    function ZapOutWithPermit(
        address toTokenAddress,
        address fromPoolAddress,
        uint256 incomingLP,
        uint256 minTokensRec,
        bytes memory permitData,
        address[] memory swapTargets,
        bytes[] memory swapData,
        address affiliate
    ) public stopInEmergency returns (uint256) {
        // permit
        _validatePool(fromPoolAddress);
        (bool success, ) = fromPoolAddress.call(permitData);
        require(success, "Could Not Permit");

        return (
            ZapOut(
                toTokenAddress,
                fromPoolAddress,
                incomingLP,
                minTokensRec,
                swapTargets,
                swapData,
                affiliate,
                false
            )
        );
    }

    function _validatePool(address poolAddress) internal view {
        IUniswapV2Pair pair = IUniswapV2Pair(poolAddress);
        address token0 = pair.token0();
        address token1 = pair.token1();

        address retrievedAddress =
            pancakeswapFactoryAddress.getPair(token0, token1);

        require(retrievedAddress == poolAddress, "Invalid Pool Address");
    }

    function _removeLiquidity(
        address fromPoolAddress,
        uint256 incomingLP,
        bool shouldSellEntireBalance
    ) internal returns (uint256 amount0, uint256 amount1) {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);

        require(address(pair) != address(0), "Pool Cannot be Zero Address");

        address token0 = pair.token0();
        address token1 = pair.token1();

        _pullTokens(fromPoolAddress, incomingLP, shouldSellEntireBalance);

        _approveToken(fromPoolAddress, address(pancakeswapRouter), incomingLP);

        (amount0, amount1) = pancakeswapRouter.removeLiquidity(
            token0,
            token1,
            incomingLP,
            1,
            1,
            address(this),
            deadline
        );
        require(amount0 > 0 && amount1 > 0, "Removed Insufficient Liquidity");
    }

    function _swapTokens(
        address fromPoolAddress,
        uint256 amount0,
        uint256 amount1,
        address toToken,
        address[] memory swapTargets,
        bytes[] memory swapData
    ) internal returns (uint256 tokensBought) {
        address token0 = IUniswapV2Pair(fromPoolAddress).token0();
        address token1 = IUniswapV2Pair(fromPoolAddress).token1();

        //swap token0 to toToken
        if (token0 == toToken) {
            tokensBought = tokensBought + amount0;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token0,
                    toToken,
                    amount0,
                    swapTargets[0],
                    swapData[0]
                );
        }

        //swap token1 to toToken
        if (token1 == toToken) {
            tokensBought = tokensBought + amount1;
        } else {
            //swap token using 0x swap
            tokensBought =
                tokensBought +
                _fillQuote(
                    token1,
                    toToken,
                    amount1,
                    swapTargets[1],
                    swapData[1]
                );
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toToken,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256) {
        if (fromTokenAddress == wbnbTokenAddress && toToken == address(0)) {
            IWETH(wbnbTokenAddress).withdraw(amount);
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == address(0)) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toToken);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        uint256 finalBalance = _getBalance(toToken) - initialBalance;

        require(finalBalance > 0, "Swapped to Invalid Intermediate");

        return finalBalance;
    }

    /**
        @notice Utility function to determine quantity and addresses of tokens being removed
        @param fromPoolAddress Pool from which to remove liquidity
        @param liquidity Quantity of LP tokens to remove.
        @return amountA Quantity of tokenA removed
        @return amountB Quantity of tokenB removed
        @return token0 Address of the underlying token to be removed
        @return token1 Address of the underlying token to be removed
    */
    function removeLiquidityReturn(address fromPoolAddress, uint256 liquidity)
        external
        view
        returns (
            uint256 amountA,
            uint256 amountB,
            address token0,
            address token1
        )
    {
        IUniswapV2Pair pair = IUniswapV2Pair(fromPoolAddress);
        token0 = pair.token0();
        token1 = pair.token1();

        uint256 balance0 = IERC20(token0).balanceOf(fromPoolAddress);
        uint256 balance1 = IERC20(token1).balanceOf(fromPoolAddress);

        uint256 _totalSupply = pair.totalSupply();

        amountA = (liquidity * balance0) / _totalSupply;
        amountB = (liquidity * balance1) / _totalSupply;
    }
}

// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "./ZapBaseV2.sol";

abstract contract ZapInBaseV3 is ZapBaseV2 {
    using SafeERC20 for IERC20;

    function _pullTokens(
        address token,
        uint256 amount,
        address affiliate,
        bool enableGoodwill,
        bool shouldSellEntireBalance
    ) internal returns (uint256 value) {
        uint256 totalGoodwillPortion;

        if (token == address(0)) {
            require(msg.value > 0, "No eth sent");

            // subtract goodwill
            totalGoodwillPortion = _subtractGoodwill(
                ETHAddress,
                msg.value,
                affiliate,
                enableGoodwill
            );

            return msg.value - totalGoodwillPortion;
        }
        require(amount > 0, "Invalid token amount");
        require(msg.value == 0, "Eth sent with token");

        //transfer token
        if (shouldSellEntireBalance) {
            require(
                Address.isContract(msg.sender),
                "ERR: shouldSellEntireBalance is true for EOA"
            );
            amount = IERC20(token).allowance(msg.sender, address(this));
        }
        IERC20(token).safeTransferFrom(msg.sender, address(this), amount);

        // subtract goodwill
        totalGoodwillPortion = _subtractGoodwill(
            token,
            amount,
            affiliate,
            enableGoodwill
        );

        return amount - totalGoodwillPortion;
    }

    function _subtractGoodwill(
        address token,
        uint256 amount,
        address affiliate,
        bool enableGoodwill
    ) internal returns (uint256 totalGoodwillPortion) {
        bool whitelisted = feeWhitelist[msg.sender];
        if (enableGoodwill && !whitelisted && goodwill > 0) {
            totalGoodwillPortion = (amount * goodwill) / 10000;

            if (affiliates[affiliate]) {
                if (token == address(0)) {
                    token = ETHAddress;
                }

                uint256 affiliatePortion =
                    (totalGoodwillPortion * affiliateSplit) / 100;
                affiliateBalance[affiliate][token] += affiliatePortion;
                totalAffiliateBalance[token] += affiliatePortion;
            }
        }
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Yearn Vaults using ETH or ERC20 Tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

interface IWETH {
    function deposit() external payable;

    function transfer(address to, uint256 value) external returns (bool);

    function withdraw(uint256) external;
}

interface IYVault {
    function deposit(uint256) external;

    function withdraw(uint256) external;

    function getPricePerFullShare() external view returns (uint256);

    function token() external view returns (address);

    // V2
    function pricePerShare() external view returns (uint256);
}

// -- Aave --
interface IAaveLendingPoolAddressesProvider {
    function getLendingPool() external view returns (address);

    function getLendingPoolCore() external view returns (address payable);
}

interface IAaveLendingPoolCore {
    function getReserveATokenAddress(address _reserve)
        external
        view
        returns (address);
}

interface IAaveLendingPool {
    function deposit(
        address _reserve,
        uint256 _amount,
        uint16 _referralCode
    ) external payable;
}

contract yVault_ZapIn_V4 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IAaveLendingPoolAddressesProvider
        private constant lendingPoolAddressProvider =
        IAaveLendingPoolAddressesProvider(
            0x24a42fD28C976A61Df5D00D0599C34c4f90748c8
        );

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    event zapIn(address sender, address pool, uint256 tokensRec);

    constructor(
        address _curveZapIn,
        uint256 _goodwill,
        uint256 _affiliateSplit
    ) ZapBaseV2(_goodwill, _affiliateSplit) {
        // Curve ZapIn
        approvedTargets[_curveZapIn] = true;
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    /**
        @notice This function adds liquidity to a Yearn vaults with ETH or ERC20 tokens
        @param fromToken The token used for entry (address(0) if ether)
        @param amountIn The amount of fromToken to invest
        @param toVault Yearn vault address
        @param superVault Super vault to depoist toVault tokens into (address(0) if none)
        @param isAaveUnderlying True if vault contains aave token
        @param minYVTokens The minimum acceptable quantity vault tokens to receive. Reverts otherwise
        @param intermediateToken Token to swap fromToken to before entering vault
        @param swapTarget Excecution target for the swap or Zap
        @param swapData DEX quote or Zap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
        @return tokensReceived Quantity of Vault tokens received
     */
    function ZapIn(
        address fromToken,
        uint256 amountIn,
        address toVault,
        address superVault,
        bool isAaveUnderlying,
        uint256 minYVTokens,
        address intermediateToken,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256 tokensReceived) {
        // get incoming tokens
        uint256 toInvest =
            _pullTokens(
                fromToken,
                amountIn,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        // get intermediate token
        uint256 intermediateAmt =
            _fillQuote(
                fromToken,
                intermediateToken,
                toInvest,
                swapTarget,
                swapData
            );

        // get 'aIntermediateToken'
        if (isAaveUnderlying) {
            address aaveLendingPoolCore =
                lendingPoolAddressProvider.getLendingPoolCore();
            _approveToken(intermediateToken, aaveLendingPoolCore);

            IAaveLendingPool(lendingPoolAddressProvider.getLendingPool())
                .deposit(intermediateToken, intermediateAmt, 0);

            intermediateToken = IAaveLendingPoolCore(aaveLendingPoolCore)
                .getReserveATokenAddress(intermediateToken);
        }

        return
            _zapIn(
                toVault,
                superVault,
                minYVTokens,
                intermediateToken,
                intermediateAmt
            );
    }

    function _zapIn(
        address toVault,
        address superVault,
        uint256 minYVTokens,
        address intermediateToken,
        uint256 intermediateAmt
    ) internal returns (uint256 tokensReceived) {
        // Deposit to Vault
        if (superVault == address(0)) {
            tokensReceived = _vaultDeposit(
                intermediateToken,
                intermediateAmt,
                toVault,
                minYVTokens,
                true
            );
        } else {
            uint256 intermediateYVTokens =
                _vaultDeposit(
                    intermediateToken,
                    intermediateAmt,
                    toVault,
                    0,
                    false
                );
            // deposit to super vault
            tokensReceived = _vaultDeposit(
                IYVault(superVault).token(),
                intermediateYVTokens,
                superVault,
                minYVTokens,
                true
            );
        }
    }

    function _vaultDeposit(
        address underlyingVaultToken,
        uint256 amount,
        address toVault,
        uint256 minTokensRec,
        bool shouldTransfer
    ) internal returns (uint256 tokensReceived) {
        _approveToken(underlyingVaultToken, toVault);

        uint256 iniYVaultBal = IERC20(toVault).balanceOf(address(this));
        IYVault(toVault).deposit(amount);
        tokensReceived =
            IERC20(toVault).balanceOf(address(this)) -
            iniYVaultBal;
        require(tokensReceived >= minTokensRec, "Err: High Slippage");

        if (shouldTransfer) {
            IERC20(toVault).safeTransfer(msg.sender, tokensReceived);
            emit zapIn(msg.sender, toVault, tokensReceived);
        }
    }

    function _fillQuote(
        address _fromTokenAddress,
        address toToken,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amtBought) {
        if (_fromTokenAddress == toToken) {
            return _amount;
        }

        if (_fromTokenAddress == address(0) && toToken == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return _amount;
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget);
        }

        uint256 iniBal = _getBalance(toToken);
        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");
        uint256 finalBal = _getBalance(toToken);

        amtBought = finalBal - iniBal;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Uniswap V2 pools using ETH or any ERC20 Token.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

// import "@uniswap/lib/contracts/libraries/Babylonian.sol";
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

interface IWETH {
    function deposit() external payable;

    function transfer(address to, uint256 value) external returns (bool);

    function withdraw(uint256) external;
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address);
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETH(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountToken, uint256 amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint256 liquidity,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountA, uint256 amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountToken, uint256 amountETH);

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function swapTokensForExactETH(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactTokensForETH(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapETHForExactTokens(
        uint256 amountOut,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint256 liquidity,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint256 amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function quote(
        uint256 amountA,
        uint256 reserveA,
        uint256 reserveB
    ) external pure returns (uint256 amountB);

    function getAmountOut(
        uint256 amountIn,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountOut);

    function getAmountIn(
        uint256 amountOut,
        uint256 reserveIn,
        uint256 reserveOut
    ) external pure returns (uint256 amountIn);

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);

    function getAmountsIn(uint256 amountOut, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );
}

contract UniswapV2_ZapIn_General_V5 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IUniswapV2Factory private constant UniSwapV2FactoryAddress =
        IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);

    IUniswapV2Router02 private constant uniswapRouter =
        IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
    @notice This function is used to invest in given Uniswap V2 pair through ETH/ERC20 Tokens
    @param _FromTokenContractAddress The ERC20 token used for investment (address(0x00) if ether)
    @param _pairAddress The Uniswap pair address
    @param _amount The amount of fromToken to invest
    @param _minPoolTokens Reverts if less tokens received than this
    @param _swapTarget Excecution target for the first swap
    @param swapData DEX quote data
    @param affiliate Affiliate address
    @param transferResidual Set false to save gas by donating the residual remaining after a Zap
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    @return Amount of LP bought
     */
    function ZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        uint256 _minPoolTokens,
        address _swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool transferResidual,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256) {
        uint256 toInvest =
            _pullTokens(
                _FromTokenContractAddress,
                _amount,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        uint256 LPBought =
            _performZapIn(
                _FromTokenContractAddress,
                _pairAddress,
                toInvest,
                _swapTarget,
                swapData,
                transferResidual
            );
        require(LPBought >= _minPoolTokens, "High Slippage");

        emit zapIn(msg.sender, _pairAddress, LPBought);

        IERC20(_pairAddress).safeTransfer(msg.sender, LPBought);
        return LPBought;
    }

    function _getPairTokens(address _pairAddress)
        internal
        pure
        returns (address token0, address token1)
    {
        IUniswapV2Pair uniPair = IUniswapV2Pair(_pairAddress);
        token0 = uniPair.token0();
        token1 = uniPair.token1();
    }

    function _performZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData,
        bool transferResidual
    ) internal returns (uint256) {
        uint256 intermediateAmt;
        address intermediateToken;
        (address _ToUniswapToken0, address _ToUniswapToken1) =
            _getPairTokens(_pairAddress);

        if (
            _FromTokenContractAddress != _ToUniswapToken0 &&
            _FromTokenContractAddress != _ToUniswapToken1
        ) {
            // swap to intermediate
            (intermediateAmt, intermediateToken) = _fillQuote(
                _FromTokenContractAddress,
                _pairAddress,
                _amount,
                _swapTarget,
                swapData
            );
        } else {
            intermediateToken = _FromTokenContractAddress;
            intermediateAmt = _amount;
        }

        // divide intermediate into appropriate amount to add liquidity
        (uint256 token0Bought, uint256 token1Bought) =
            _swapIntermediate(
                intermediateToken,
                _ToUniswapToken0,
                _ToUniswapToken1,
                intermediateAmt
            );

        return
            _uniDeposit(
                _ToUniswapToken0,
                _ToUniswapToken1,
                token0Bought,
                token1Bought,
                transferResidual
            );
    }

    function _uniDeposit(
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 token0Bought,
        uint256 token1Bought,
        bool transferResidual
    ) internal returns (uint256) {
        _approveToken(_ToUnipoolToken0, address(uniswapRouter), token0Bought);
        _approveToken(_ToUnipoolToken1, address(uniswapRouter), token1Bought);

        (uint256 amountA, uint256 amountB, uint256 LP) =
            uniswapRouter.addLiquidity(
                _ToUnipoolToken0,
                _ToUnipoolToken1,
                token0Bought,
                token1Bought,
                1,
                1,
                address(this),
                deadline
            );

        if (transferResidual) {
            //Returning Residue in token0, if any.
            if (token0Bought - amountA > 0) {
                IERC20(_ToUnipoolToken0).safeTransfer(
                    msg.sender,
                    token0Bought - amountA
                );
            }

            //Returning Residue in token1, if any
            if (token1Bought - amountB > 0) {
                IERC20(_ToUnipoolToken1).safeTransfer(
                    msg.sender,
                    token1Bought - amountB
                );
            }
        }

        return LP;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought, address intermediateToken) {
        if (_swapTarget == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return (_amount, wethTokenAddress);
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        (address _token0, address _token1) = _getPairTokens(_pairAddress);
        IERC20 token0 = IERC20(_token0);
        IERC20 token1 = IERC20(_token1);
        uint256 initialBalance0 = token0.balanceOf(address(this));
        uint256 initialBalance1 = token1.balanceOf(address(this));

        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");

        uint256 finalBalance0 =
            token0.balanceOf(address(this)) - initialBalance0;
        uint256 finalBalance1 =
            token1.balanceOf(address(this)) - initialBalance1;

        if (finalBalance0 > finalBalance1) {
            amountBought = finalBalance0;
            intermediateToken = _token0;
        } else {
            amountBought = finalBalance1;
            intermediateToken = _token1;
        }

        require(amountBought > 0, "Swapped to Invalid Intermediate");
    }

    function _swapIntermediate(
        address _toContractAddress,
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 _amount
    ) internal returns (uint256 token0Bought, uint256 token1Bought) {
        IUniswapV2Pair pair =
            IUniswapV2Pair(
                UniSwapV2FactoryAddress.getPair(
                    _ToUnipoolToken0,
                    _ToUnipoolToken1
                )
            );
        (uint256 res0, uint256 res1, ) = pair.getReserves();
        if (_toContractAddress == _ToUnipoolToken0) {
            uint256 amountToSwap = calculateSwapInAmount(res0, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token1Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken1,
                amountToSwap
            );
            token0Bought = _amount - amountToSwap;
        } else {
            uint256 amountToSwap = calculateSwapInAmount(res1, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token0Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken0,
                amountToSwap
            );
            token1Bought = _amount - amountToSwap;
        }
    }

    function calculateSwapInAmount(uint256 reserveIn, uint256 userIn)
        internal
        pure
        returns (uint256)
    {
        return
            (Babylonian.sqrt(
                reserveIn * ((userIn * 3988000) + (reserveIn * 3988009))
            ) - (reserveIn * 1997)) / 1994;
    }

    /**
    @notice This function is used to swap ERC20 <> ERC20
    @param _FromTokenContractAddress The token address to swap from.
    @param _ToTokenContractAddress The token address to swap to. 
    @param tokens2Trade The amount of tokens to swap
    @return tokenBought The quantity of tokens bought
    */
    function _token2Token(
        address _FromTokenContractAddress,
        address _ToTokenContractAddress,
        uint256 tokens2Trade
    ) internal returns (uint256 tokenBought) {
        if (_FromTokenContractAddress == _ToTokenContractAddress) {
            return tokens2Trade;
        }

        _approveToken(
            _FromTokenContractAddress,
            address(uniswapRouter),
            tokens2Trade
        );

        address pair =
            UniSwapV2FactoryAddress.getPair(
                _FromTokenContractAddress,
                _ToTokenContractAddress
            );
        require(pair != address(0), "No Swap Available");
        address[] memory path = new address[](2);
        path[0] = _FromTokenContractAddress;
        path[1] = _ToTokenContractAddress;

        tokenBought = uniswapRouter.swapExactTokensForTokens(
            tokens2Trade,
            1,
            path,
            address(this),
            deadline
        )[path.length - 1];

        require(tokenBought > 0, "Error Swapping Tokens 2");
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Sushiswap pools using ETH or any ERC20 Token.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

// import "@uniswap/lib/contracts/libraries/Babylonian.sol";
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

interface IWETH {
    function deposit() external payable;
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address);
}

interface IUniswapV2Router02 {
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );
}

contract Sushiswap_ZapIn_V4 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IUniswapV2Factory private constant sushiSwapFactoryAddress =
        IUniswapV2Factory(0xC0AEe478e3658e2610c5F7A4A2E1777cE9e4f2Ac);

    IUniswapV2Router02 private constant sushiSwapRouter =
        IUniswapV2Router02(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F);

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
    @notice Add liquidity to Sushiswap pools with ETH/ERC20 Tokens
    @param _FromTokenContractAddress The ERC20 token used (address(0x00) if ether)
    @param _pairAddress The Sushiswap pair address
    @param _amount The amount of fromToken to invest
    @param _minPoolTokens Minimum quantity of pool tokens to receive. Reverts otherwise
    @param _swapTarget Excecution target for the first swap
    @param swapData DEX quote data
    @param affiliate Affiliate address
    @param transferResidual Set false to save gas by donating the residual remaining after a Zap
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    @return Amount of LP bought
     */
    function ZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        uint256 _minPoolTokens,
        address _swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool transferResidual,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256) {
        uint256 toInvest =
            _pullTokens(
                _FromTokenContractAddress,
                _amount,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        uint256 LPBought =
            _performZapIn(
                _FromTokenContractAddress,
                _pairAddress,
                toInvest,
                _swapTarget,
                swapData,
                transferResidual
            );
        require(LPBought >= _minPoolTokens, "High Slippage");

        emit zapIn(msg.sender, _pairAddress, LPBought);

        IERC20(_pairAddress).safeTransfer(msg.sender, LPBought);
        return LPBought;
    }

    function _getPairTokens(address _pairAddress)
        internal
        pure
        returns (address token0, address token1)
    {
        IUniswapV2Pair uniPair = IUniswapV2Pair(_pairAddress);
        token0 = uniPair.token0();
        token1 = uniPair.token1();
    }

    function _performZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData,
        bool transferResidual
    ) internal returns (uint256) {
        uint256 intermediateAmt;
        address intermediateToken;
        (address _ToUniswapToken0, address _ToUniswapToken1) =
            _getPairTokens(_pairAddress);

        if (
            _FromTokenContractAddress != _ToUniswapToken0 &&
            _FromTokenContractAddress != _ToUniswapToken1
        ) {
            // swap to intermediate
            (intermediateAmt, intermediateToken) = _fillQuote(
                _FromTokenContractAddress,
                _pairAddress,
                _amount,
                _swapTarget,
                swapData
            );
        } else {
            intermediateToken = _FromTokenContractAddress;
            intermediateAmt = _amount;
        }

        // divide intermediate into appropriate amount to add liquidity
        (uint256 token0Bought, uint256 token1Bought) =
            _swapIntermediate(
                intermediateToken,
                _ToUniswapToken0,
                _ToUniswapToken1,
                intermediateAmt
            );

        return
            _uniDeposit(
                _ToUniswapToken0,
                _ToUniswapToken1,
                token0Bought,
                token1Bought,
                transferResidual
            );
    }

    function _uniDeposit(
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 token0Bought,
        uint256 token1Bought,
        bool transferResidual
    ) internal returns (uint256) {
        _approveToken(_ToUnipoolToken0, address(sushiSwapRouter), token0Bought);
        _approveToken(_ToUnipoolToken1, address(sushiSwapRouter), token1Bought);

        (uint256 amountA, uint256 amountB, uint256 LP) =
            sushiSwapRouter.addLiquidity(
                _ToUnipoolToken0,
                _ToUnipoolToken1,
                token0Bought,
                token1Bought,
                1,
                1,
                address(this),
                deadline
            );

        if (transferResidual) {
            //Returning Residue in token0, if any.
            if (token0Bought - amountA > 0) {
                IERC20(_ToUnipoolToken0).safeTransfer(
                    msg.sender,
                    token0Bought - amountA
                );
            }

            //Returning Residue in token1, if any
            if (token1Bought - amountB > 0) {
                IERC20(_ToUnipoolToken1).safeTransfer(
                    msg.sender,
                    token1Bought - amountB
                );
            }
        }

        return LP;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought, address intermediateToken) {
        if (_swapTarget == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return (_amount, wethTokenAddress);
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        (address _token0, address _token1) = _getPairTokens(_pairAddress);
        IERC20 token0 = IERC20(_token0);
        IERC20 token1 = IERC20(_token1);
        uint256 initialBalance0 = token0.balanceOf(address(this));
        uint256 initialBalance1 = token1.balanceOf(address(this));

        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");

        uint256 finalBalance0 =
            token0.balanceOf(address(this)) - initialBalance0;
        uint256 finalBalance1 =
            token1.balanceOf(address(this)) - initialBalance1;

        if (finalBalance0 > finalBalance1) {
            amountBought = finalBalance0;
            intermediateToken = _token0;
        } else {
            amountBought = finalBalance1;
            intermediateToken = _token1;
        }

        require(amountBought > 0, "Swapped to Invalid Intermediate");
    }

    function _swapIntermediate(
        address _toContractAddress,
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 _amount
    ) internal returns (uint256 token0Bought, uint256 token1Bought) {
        IUniswapV2Pair pair =
            IUniswapV2Pair(
                sushiSwapFactoryAddress.getPair(
                    _ToUnipoolToken0,
                    _ToUnipoolToken1
                )
            );
        (uint256 res0, uint256 res1, ) = pair.getReserves();
        if (_toContractAddress == _ToUnipoolToken0) {
            uint256 amountToSwap = calculateSwapInAmount(res0, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token1Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken1,
                amountToSwap
            );
            token0Bought = _amount - amountToSwap;
        } else {
            uint256 amountToSwap = calculateSwapInAmount(res1, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token0Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken0,
                amountToSwap
            );
            token1Bought = _amount - amountToSwap;
        }
    }

    function calculateSwapInAmount(uint256 reserveIn, uint256 userIn)
        internal
        pure
        returns (uint256)
    {
        return
            (Babylonian.sqrt(
                reserveIn * ((userIn * 3988000) + (reserveIn * 3988009))
            ) - (reserveIn * 1997)) / 1994;
    }

    /**
    @notice This function is used to swap ERC20 <> ERC20
    @param _FromTokenContractAddress The token address to swap from.
    @param _ToTokenContractAddress The token address to swap to. 
    @param tokens2Trade The amount of tokens to swap
    @return tokenBought The quantity of tokens bought
    */
    function _token2Token(
        address _FromTokenContractAddress,
        address _ToTokenContractAddress,
        uint256 tokens2Trade
    ) internal returns (uint256 tokenBought) {
        if (_FromTokenContractAddress == _ToTokenContractAddress) {
            return tokens2Trade;
        }

        _approveToken(
            _FromTokenContractAddress,
            address(sushiSwapRouter),
            tokens2Trade
        );

        address pair =
            sushiSwapFactoryAddress.getPair(
                _FromTokenContractAddress,
                _ToTokenContractAddress
            );
        require(pair != address(0), "No Swap Available");
        address[] memory path = new address[](2);
        path[0] = _FromTokenContractAddress;
        path[1] = _ToTokenContractAddress;

        tokenBought = sushiSwapRouter.swapExactTokensForTokens(
            tokens2Trade,
            1,
            path,
            address(this),
            deadline
        )[path.length - 1];

        require(tokenBought > 0, "Error Swapping Tokens 2");
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract enters Pool Together Prize Pools with ETH or ERC tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

interface IWETH {
    function deposit() external payable;
}

interface IPoolTogether {
    function depositTo(
        address to,
        uint256 amount,
        address controlledToken,
        address referrer
    ) external;

    function tokens() external returns (address[] memory);

    function token() external returns (address);
}

contract PoolTogether_ZapIn_V2 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    address private constant zGoodwillAddress =
        0x3CE37278de6388532C3949ce4e886F365B14fB56;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
        @notice This function adds liquidity to a PoolTogether prize pool with ETH or ERC20 tokens
        @param fromToken The token used for entry (address(0) if ether)
        @param toToken The intermediate ERC20 token to swap to
        @param prizePool Prize pool to enter
        @param amountIn The quantity of fromToken to invest
        @param minTickets The minimum acceptable quantity of tickets to acquire. Reverts otherwise
        @param swapTarget Excecution target for swap
        @param swapData DEX quote data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
     */
    function ZapIn(
        address fromToken,
        address toToken,
        address prizePool,
        uint256 amountIn,
        uint256 minTickets,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency {
        uint256 toInvest =
            _pullTokens(
                fromToken,
                amountIn,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        IPoolTogether _prizePool = IPoolTogether(prizePool);

        if (_prizePool.token() == fromToken) {
            _enterPrizePool(_prizePool, toInvest, minTickets);
        } else {
            uint256 tokensBought =
                _fillQuote(fromToken, toToken, toInvest, swapTarget, swapData);
            _enterPrizePool(_prizePool, tokensBought, minTickets);
        }
    }

    function _enterPrizePool(
        IPoolTogether prizePool,
        uint256 amount,
        uint256 minTickets
    ) internal {
        address poolToken = prizePool.token();
        address ticket = prizePool.tokens()[1];

        _approveToken(poolToken, address(prizePool));

        uint256 iniTicketBal = _getBalance(ticket);

        prizePool.depositTo(address(this), amount, ticket, zGoodwillAddress);

        uint256 ticketsRec = _getBalance(ticket) - iniTicketBal;

        require(ticketsRec >= minTickets, "High Slippage");

        IERC20(ticket).safeTransfer(msg.sender, ticketsRec);

        emit zapIn(msg.sender, address(prizePool), amount);
    }

    function _fillQuote(
        address fromToken,
        address toToken,
        uint256 _amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought) {
        if (fromToken == toToken) {
            return _amount;
        }

        if (fromToken == address(0) && toToken == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return _amount;
        }

        uint256 valueToSend;
        if (fromToken == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(fromToken, swapTarget);
        }

        uint256 initialBalance = _getBalance(toToken);
        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");
        amountBought = _getBalance(toToken) - initialBalance;

        require(amountBought > 0, "Swapped To Invalid Intermediate");
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Sushiswap pools on Polygon (Matic) using ETH or any ERC20 Token.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapInBaseV3.sol";

// import "@uniswap/lib/contracts/libraries/Babylonian.sol";
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

interface IWETH {
    function deposit() external payable;
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address);
}

interface IUniswapV2Router02 {
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );
}

contract Sushiswap_ZapIn_Polygon_V3 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IUniswapV2Factory private constant sushiSwapFactoryAddress =
        IUniswapV2Factory(0xc35DADB65012eC5796536bD9864eD8773aBc74C4);

    IUniswapV2Router02 private constant sushiSwapRouter =
        IUniswapV2Router02(0x1b02dA8Cb0d097eB8D57A175b88c7D8b47997506);

    address private constant wmaticTokenAddress =
        address(0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270);

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
    @notice Add liquidity to Sushiswap pools with ETH/ERC20 Tokens
    @param _FromTokenContractAddress The ERC20 token used (address(0x00) if ether)
    @param _pairAddress The Sushiswap pair address
    @param _amount The amount of fromToken to invest
    @param _minPoolTokens Minimum quantity of pool tokens to receive. Reverts otherwise
    @param _swapTarget Excecution target for the first swap
    @param swapData DEX quote data
    @param affiliate Affiliate address
    @param transferResidual Set false to save gas by donating the residual remaining after a Zap
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    @return Amount of LP bought
     */
    function ZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        uint256 _minPoolTokens,
        address _swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool transferResidual,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256) {
        uint256 toInvest =
            _pullTokens(
                _FromTokenContractAddress,
                _amount,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        uint256 LPBought =
            _performZapIn(
                _FromTokenContractAddress,
                _pairAddress,
                toInvest,
                _swapTarget,
                swapData,
                transferResidual
            );
        require(LPBought >= _minPoolTokens, "High Slippage");

        emit zapIn(msg.sender, _pairAddress, LPBought);

        IERC20(_pairAddress).safeTransfer(msg.sender, LPBought);
        return LPBought;
    }

    function _getPairTokens(address _pairAddress)
        internal
        pure
        returns (address token0, address token1)
    {
        IUniswapV2Pair uniPair = IUniswapV2Pair(_pairAddress);
        token0 = uniPair.token0();
        token1 = uniPair.token1();
    }

    function _performZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData,
        bool transferResidual
    ) internal returns (uint256) {
        uint256 intermediateAmt;
        address intermediateToken;
        (address _ToUniswapToken0, address _ToUniswapToken1) =
            _getPairTokens(_pairAddress);

        if (
            _FromTokenContractAddress != _ToUniswapToken0 &&
            _FromTokenContractAddress != _ToUniswapToken1
        ) {
            // swap to intermediate
            (intermediateAmt, intermediateToken) = _fillQuote(
                _FromTokenContractAddress,
                _pairAddress,
                _amount,
                _swapTarget,
                swapData
            );
        } else {
            intermediateToken = _FromTokenContractAddress;
            intermediateAmt = _amount;
        }

        // divide intermediate into appropriate amount to add liquidity
        (uint256 token0Bought, uint256 token1Bought) =
            _swapIntermediate(
                intermediateToken,
                _ToUniswapToken0,
                _ToUniswapToken1,
                intermediateAmt
            );

        return
            _uniDeposit(
                _ToUniswapToken0,
                _ToUniswapToken1,
                token0Bought,
                token1Bought,
                transferResidual
            );
    }

    function _uniDeposit(
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 token0Bought,
        uint256 token1Bought,
        bool transferResidual
    ) internal returns (uint256) {
        _approveToken(_ToUnipoolToken0, address(sushiSwapRouter), token0Bought);
        _approveToken(_ToUnipoolToken1, address(sushiSwapRouter), token1Bought);

        (uint256 amountA, uint256 amountB, uint256 LP) =
            sushiSwapRouter.addLiquidity(
                _ToUnipoolToken0,
                _ToUnipoolToken1,
                token0Bought,
                token1Bought,
                1,
                1,
                address(this),
                deadline
            );

        if (transferResidual) {
            //Returning Residue in token0, if any.
            if (token0Bought - amountA > 0) {
                IERC20(_ToUnipoolToken0).safeTransfer(
                    msg.sender,
                    token0Bought - amountA
                );
            }

            //Returning Residue in token1, if any
            if (token1Bought - amountB > 0) {
                IERC20(_ToUnipoolToken1).safeTransfer(
                    msg.sender,
                    token1Bought - amountB
                );
            }
        }

        return LP;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought, address intermediateToken) {
        if (_swapTarget == wmaticTokenAddress) {
            IWETH(wmaticTokenAddress).deposit{ value: _amount }();
            return (_amount, wmaticTokenAddress);
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        (address _token0, address _token1) = _getPairTokens(_pairAddress);
        IERC20 token0 = IERC20(_token0);
        IERC20 token1 = IERC20(_token1);
        uint256 initialBalance0 = token0.balanceOf(address(this));
        uint256 initialBalance1 = token1.balanceOf(address(this));

        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");

        uint256 finalBalance0 =
            token0.balanceOf(address(this)) - initialBalance0;
        uint256 finalBalance1 =
            token1.balanceOf(address(this)) - initialBalance1;

        if (finalBalance0 > finalBalance1) {
            amountBought = finalBalance0;
            intermediateToken = _token0;
        } else {
            amountBought = finalBalance1;
            intermediateToken = _token1;
        }

        require(amountBought > 0, "Swapped to Invalid Intermediate");
    }

    function _swapIntermediate(
        address _toContractAddress,
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 _amount
    ) internal returns (uint256 token0Bought, uint256 token1Bought) {
        IUniswapV2Pair pair =
            IUniswapV2Pair(
                sushiSwapFactoryAddress.getPair(
                    _ToUnipoolToken0,
                    _ToUnipoolToken1
                )
            );
        (uint256 res0, uint256 res1, ) = pair.getReserves();
        if (_toContractAddress == _ToUnipoolToken0) {
            uint256 amountToSwap = calculateSwapInAmount(res0, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token1Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken1,
                amountToSwap
            );
            token0Bought = _amount - amountToSwap;
        } else {
            uint256 amountToSwap = calculateSwapInAmount(res1, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token0Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken0,
                amountToSwap
            );
            token1Bought = _amount - amountToSwap;
        }
    }

    function calculateSwapInAmount(uint256 reserveIn, uint256 userIn)
        internal
        pure
        returns (uint256)
    {
        return
            (Babylonian.sqrt(
                reserveIn * ((userIn * 3988000) + (reserveIn * 3988009))
            ) - (reserveIn * 1997)) / 1994;
    }

    /**
    @notice This function is used to swap ERC20 <> ERC20
    @param _FromTokenContractAddress The token address to swap from.
    @param _ToTokenContractAddress The token address to swap to. 
    @param tokens2Trade The amount of tokens to swap
    @return tokenBought The quantity of tokens bought
    */
    function _token2Token(
        address _FromTokenContractAddress,
        address _ToTokenContractAddress,
        uint256 tokens2Trade
    ) internal returns (uint256 tokenBought) {
        if (_FromTokenContractAddress == _ToTokenContractAddress) {
            return tokens2Trade;
        }

        _approveToken(
            _FromTokenContractAddress,
            address(sushiSwapRouter),
            tokens2Trade
        );

        address pair =
            sushiSwapFactoryAddress.getPair(
                _FromTokenContractAddress,
                _ToTokenContractAddress
            );
        require(pair != address(0), "No Swap Available");
        address[] memory path = new address[](2);
        path[0] = _FromTokenContractAddress;
        path[1] = _ToTokenContractAddress;

        tokenBought = sushiSwapRouter.swapExactTokensForTokens(
            tokens2Trade,
            1,
            path,
            address(this),
            deadline
        )[path.length - 1];

        require(tokenBought > 0, "Error Swapping Tokens 2");
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Quickswap pools on Polygon (Matic) using ETH or any ERC20 Tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapInBaseV3.sol";

// import "@uniswap/lib/contracts/libraries/Babylonian.sol";
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

interface IWETH {
    function deposit() external payable;
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address);
}

interface IUniswapV2Router02 {
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );
}

contract Quickswap_ZapIn_V2 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IUniswapV2Factory private constant quickswapFactory =
        IUniswapV2Factory(0x5757371414417b8C6CAad45bAeF941aBc7d3Ab32);

    IUniswapV2Router02 private constant quickswapRouter =
        IUniswapV2Router02(0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff);

    address private constant wmaticTokenAddress =
        address(0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270);

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
    @notice Add liquidity to Quickswap pools with ETH/ERC20 Tokens
    @param _FromTokenContractAddress The ERC20 token used (address(0x00) if ether)
    @param _pairAddress The Quickswap pair address
    @param _amount The amount of fromToken to invest
    @param _minPoolTokens Minimum quantity of pool tokens to receive. Reverts otherwise
    @param _swapTarget Excecution target for the first swap
    @param swapData DEX quote data
    @param affiliate Affiliate address
    @param transferResidual Set false to save gas by donating the residual remaining after a Zap
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    @return Amount of LP bought
     */
    function ZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        uint256 _minPoolTokens,
        address _swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool transferResidual,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256) {
        uint256 toInvest =
            _pullTokens(
                _FromTokenContractAddress,
                _amount,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        uint256 LPBought =
            _performZapIn(
                _FromTokenContractAddress,
                _pairAddress,
                toInvest,
                _swapTarget,
                swapData,
                transferResidual
            );
        require(LPBought >= _minPoolTokens, "High Slippage");

        emit zapIn(msg.sender, _pairAddress, LPBought);

        IERC20(_pairAddress).safeTransfer(msg.sender, LPBought);
        return LPBought;
    }

    function _getPairTokens(address _pairAddress)
        internal
        pure
        returns (address token0, address token1)
    {
        IUniswapV2Pair uniPair = IUniswapV2Pair(_pairAddress);
        token0 = uniPair.token0();
        token1 = uniPair.token1();
    }

    function _performZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData,
        bool transferResidual
    ) internal returns (uint256) {
        uint256 intermediateAmt;
        address intermediateToken;
        (address _ToUniswapToken0, address _ToUniswapToken1) =
            _getPairTokens(_pairAddress);

        if (
            _FromTokenContractAddress != _ToUniswapToken0 &&
            _FromTokenContractAddress != _ToUniswapToken1
        ) {
            // swap to intermediate
            (intermediateAmt, intermediateToken) = _fillQuote(
                _FromTokenContractAddress,
                _pairAddress,
                _amount,
                _swapTarget,
                swapData
            );
        } else {
            intermediateToken = _FromTokenContractAddress;
            intermediateAmt = _amount;
        }

        // divide intermediate into appropriate amount to add liquidity
        (uint256 token0Bought, uint256 token1Bought) =
            _swapIntermediate(
                intermediateToken,
                _ToUniswapToken0,
                _ToUniswapToken1,
                intermediateAmt
            );

        return
            _uniDeposit(
                _ToUniswapToken0,
                _ToUniswapToken1,
                token0Bought,
                token1Bought,
                transferResidual
            );
    }

    function _uniDeposit(
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 token0Bought,
        uint256 token1Bought,
        bool transferResidual
    ) internal returns (uint256) {
        _approveToken(_ToUnipoolToken0, address(quickswapRouter), token0Bought);
        _approveToken(_ToUnipoolToken1, address(quickswapRouter), token1Bought);

        (uint256 amountA, uint256 amountB, uint256 LP) =
            quickswapRouter.addLiquidity(
                _ToUnipoolToken0,
                _ToUnipoolToken1,
                token0Bought,
                token1Bought,
                1,
                1,
                address(this),
                deadline
            );

        if (transferResidual) {
            //Returning Residue in token0, if any.
            if (token0Bought - amountA > 0) {
                IERC20(_ToUnipoolToken0).safeTransfer(
                    msg.sender,
                    token0Bought - amountA
                );
            }

            //Returning Residue in token1, if any
            if (token1Bought - amountB > 0) {
                IERC20(_ToUnipoolToken1).safeTransfer(
                    msg.sender,
                    token1Bought - amountB
                );
            }
        }

        return LP;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought, address intermediateToken) {
        if (_swapTarget == wmaticTokenAddress) {
            IWETH(wmaticTokenAddress).deposit{ value: _amount }();
            return (_amount, wmaticTokenAddress);
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        (address _token0, address _token1) = _getPairTokens(_pairAddress);
        IERC20 token0 = IERC20(_token0);
        IERC20 token1 = IERC20(_token1);
        uint256 initialBalance0 = token0.balanceOf(address(this));
        uint256 initialBalance1 = token1.balanceOf(address(this));

        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");

        uint256 finalBalance0 =
            token0.balanceOf(address(this)) - initialBalance0;
        uint256 finalBalance1 =
            token1.balanceOf(address(this)) - initialBalance1;

        if (finalBalance0 > finalBalance1) {
            amountBought = finalBalance0;
            intermediateToken = _token0;
        } else {
            amountBought = finalBalance1;
            intermediateToken = _token1;
        }

        require(amountBought > 0, "Swapped to Invalid Intermediate");
    }

    function _swapIntermediate(
        address _toContractAddress,
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 _amount
    ) internal returns (uint256 token0Bought, uint256 token1Bought) {
        IUniswapV2Pair pair =
            IUniswapV2Pair(
                quickswapFactory.getPair(_ToUnipoolToken0, _ToUnipoolToken1)
            );
        (uint256 res0, uint256 res1, ) = pair.getReserves();
        if (_toContractAddress == _ToUnipoolToken0) {
            uint256 amountToSwap = calculateSwapInAmount(res0, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token1Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken1,
                amountToSwap
            );
            token0Bought = _amount - amountToSwap;
        } else {
            uint256 amountToSwap = calculateSwapInAmount(res1, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token0Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken0,
                amountToSwap
            );
            token1Bought = _amount - amountToSwap;
        }
    }

    function calculateSwapInAmount(uint256 reserveIn, uint256 userIn)
        internal
        pure
        returns (uint256)
    {
        return
            (Babylonian.sqrt(
                reserveIn * ((userIn * 3988000) + (reserveIn * 3988009))
            ) - (reserveIn * 1997)) / 1994;
    }

    /**
    @notice This function is used to swap ERC20 <> ERC20
    @param _FromTokenContractAddress The token address to swap from.
    @param _ToTokenContractAddress The token address to swap to. 
    @param tokens2Trade The amount of tokens to swap
    @return tokenBought The quantity of tokens bought
    */
    function _token2Token(
        address _FromTokenContractAddress,
        address _ToTokenContractAddress,
        uint256 tokens2Trade
    ) internal returns (uint256 tokenBought) {
        if (_FromTokenContractAddress == _ToTokenContractAddress) {
            return tokens2Trade;
        }

        _approveToken(
            _FromTokenContractAddress,
            address(quickswapRouter),
            tokens2Trade
        );

        address pair =
            quickswapFactory.getPair(
                _FromTokenContractAddress,
                _ToTokenContractAddress
            );
        require(pair != address(0), "No Swap Available");
        address[] memory path = new address[](2);
        path[0] = _FromTokenContractAddress;
        path[1] = _ToTokenContractAddress;

        tokenBought = quickswapRouter.swapExactTokensForTokens(
            tokens2Trade,
            1,
            path,
            address(this),
            deadline
        )[path.length - 1];

        require(tokenBought > 0, "Error Swapping Tokens 2");
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Mushroom Vaults using ETH or ERC20 Tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

interface IWETH {
    function deposit() external payable;
}

interface IMVault {
    function deposit(uint256) external;

    function token() external view returns (address);
}

contract Mushroom_ZapIn_V2 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    constructor(
        address _curveZapIn,
        address _uniZapIn,
        uint256 _goodwill,
        uint256 _affiliateSplit
    ) ZapBaseV2(_goodwill, _affiliateSplit) {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
        // Curve ZapIn
        approvedTargets[_curveZapIn] = true;
        // Uniswap ZapIn
        approvedTargets[_uniZapIn] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
        @notice This function adds liquidity to Mushroom vaults with ETH or ERC20 tokens
        @param fromToken The token used for entry (address(0) if ether)
        @param amountIn The amount of fromToken to invest
        @param toVault Harvest vault address
        @param minMVTokens The minimum acceptable quantity vault tokens to receive. Reverts otherwise
        @param intermediateToken Token to swap fromToken to before entering vault
        @param swapTarget Excecution target for the swap or zap
        @param swapData DEX or Zap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance True if amountIn is determined at execution time (i.e. contract is caller)
        @return tokensReceived Quantity of Vault tokens received
     */
    function ZapIn(
        address fromToken,
        uint256 amountIn,
        address toVault,
        uint256 minMVTokens,
        address intermediateToken,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256 tokensReceived) {
        // get incoming tokens
        uint256 toInvest =
            _pullTokens(
                fromToken,
                amountIn,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        // get intermediate token
        uint256 intermediateAmt =
            _fillQuote(
                fromToken,
                intermediateToken,
                toInvest,
                swapTarget,
                swapData
            );

        // Deposit to Vault
        tokensReceived = _vaultDeposit(intermediateAmt, toVault, minMVTokens);
    }

    function _vaultDeposit(
        uint256 amount,
        address toVault,
        uint256 minTokensRec
    ) internal returns (uint256 tokensReceived) {
        address underlyingVaultToken = IMVault(toVault).token();

        _approveToken(underlyingVaultToken, toVault);

        uint256 iniVaultBal = IERC20(toVault).balanceOf(address(this));
        IMVault(toVault).deposit(amount);
        tokensReceived = IERC20(toVault).balanceOf(address(this)) - iniVaultBal;
        require(tokensReceived >= minTokensRec, "High Slippage");

        IERC20(toVault).safeTransfer(msg.sender, tokensReceived);
        emit zapIn(msg.sender, toVault, tokensReceived);
    }

    function _fillQuote(
        address _fromTokenAddress,
        address toToken,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amtBought) {
        if (_fromTokenAddress == toToken) {
            return _amount;
        }

        if (_fromTokenAddress == address(0) && toToken == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return _amount;
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget);
        }

        uint256 iniBal = _getBalance(toToken);
        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");
        uint256 finalBal = _getBalance(toToken);

        amtBought = finalBal - iniBal;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract deposits ETH or ERC20 tokens into Harvest Vaults
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

interface IWETH {
    function deposit() external payable;
}

// -- Harvest --
interface IHVault {
    function underlying() external view returns (address);

    function deposit(uint256 amountWei) external;
}

contract Harvest_ZapIn_V3 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    event zapIn(address sender, address pool, uint256 tokensRec);

    constructor(
        address _curveZapIn,
        address _uniZapIn,
        address _sushiZapIn,
        uint256 _goodwill,
        uint256 _affiliateSplit
    ) ZapBaseV2(_goodwill, _affiliateSplit) {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
        approvedTargets[_curveZapIn] = true;
        approvedTargets[_uniZapIn] = true;
        approvedTargets[_sushiZapIn] = true;
    }

    /**
        @notice This function adds liquidity to harvest vaults with ETH or ERC20 tokens
        @param fromToken The token used for entry (address(0) if ether)
        @param amountIn The amount of fromToken to invest
        @param vault Harvest vault address
        @param minVaultTokens The minimum acceptable quantity vault tokens to receive. Reverts otherwise
        @param intermediateToken Token to swap fromToken to before entering vault
        @param swapTarget Excecution target for the swap or zap
        @param swapData DEX or Zap data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance True if amountIn is determined at execution time (i.e. contract is caller)
        @return tokensReceived Quantity of Vault tokens received
     */
    function ZapIn(
        address fromToken,
        uint256 amountIn,
        address vault,
        uint256 minVaultTokens,
        address intermediateToken,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256 tokensReceived) {
        // get incoming tokens
        uint256 toInvest =
            _pullTokens(
                fromToken,
                amountIn,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        // get intermediate token
        uint256 intermediateAmt =
            _fillQuote(
                fromToken,
                intermediateToken,
                toInvest,
                swapTarget,
                swapData
            );

        // Deposit to Vault
        tokensReceived = _vaultDeposit(intermediateAmt, vault, minVaultTokens);
    }

    function _vaultDeposit(
        uint256 amount,
        address toVault,
        uint256 minTokensRec
    ) internal returns (uint256 tokensReceived) {
        address underlyingVaultToken = IHVault(toVault).underlying();

        _approveToken(underlyingVaultToken, toVault);

        uint256 iniYVaultBal = IERC20(toVault).balanceOf(address(this));
        IHVault(toVault).deposit(amount);
        tokensReceived =
            IERC20(toVault).balanceOf(address(this)) -
            iniYVaultBal;
        require(tokensReceived >= minTokensRec, "High Slippage");

        IERC20(toVault).safeTransfer(msg.sender, tokensReceived);
        emit zapIn(msg.sender, toVault, tokensReceived);
    }

    function _fillQuote(
        address _fromTokenAddress,
        address toToken,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amtBought) {
        if (_fromTokenAddress == toToken) {
            return _amount;
        }

        if (_fromTokenAddress == address(0) && toToken == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: _amount }();
            return _amount;
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget);
        }

        uint256 iniBal = _getBalance(toToken);
        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");
        uint256 finalBal = _getBalance(toToken);

        amtBought = finalBal - iniBal;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Curve pools with ETH or ERC tokens.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../_base/ZapInBaseV3.sol";

interface IWETH {
    function deposit() external payable;
}

interface ICurveSwap {
    function coins(int128 arg0) external view returns (address);

    function underlying_coins(int128 arg0) external view returns (address);

    function add_liquidity(uint256[4] calldata amounts, uint256 min_mint_amount)
        external;

    function add_liquidity(
        uint256[4] calldata amounts,
        uint256 min_mint_amount,
        bool addUnderlying
    ) external;

    function add_liquidity(uint256[3] calldata amounts, uint256 min_mint_amount)
        external;

    function add_liquidity(
        uint256[3] calldata amounts,
        uint256 min_mint_amount,
        bool addUnderlying
    ) external;

    function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount)
        external;

    function add_liquidity(
        uint256[2] calldata amounts,
        uint256 min_mint_amount,
        bool addUnderlying
    ) external;
}

interface ICurveEthSwap {
    function add_liquidity(uint256[2] calldata amounts, uint256 min_mint_amount)
        external
        payable
        returns (uint256);
}

interface ICurveRegistry {
    function getSwapAddress(address tokenAddress)
        external
        view
        returns (address swapAddress);

    function getTokenAddress(address swapAddress)
        external
        view
        returns (address tokenAddress);

    function getDepositAddress(address swapAddress)
        external
        view
        returns (address depositAddress);

    function getPoolTokens(address swapAddress)
        external
        view
        returns (address[4] memory poolTokens);

    function shouldAddUnderlying(address swapAddress)
        external
        view
        returns (bool);

    function getNumTokens(address swapAddress)
        external
        view
        returns (uint8 numTokens);

    function isBtcPool(address swapAddress) external view returns (bool);

    function isEthPool(address swapAddress) external view returns (bool);

    function isUnderlyingToken(
        address swapAddress,
        address tokenContractAddress
    ) external view returns (bool, uint8);
}

contract Curve_ZapIn_General_V4 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    ICurveRegistry public curveReg;

    address private constant wethTokenAddress =
        0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;

    constructor(
        ICurveRegistry _curveRegistry,
        uint256 _goodwill,
        uint256 _affiliateSplit
    ) ZapBaseV2(_goodwill, _affiliateSplit) {
        curveReg = _curveRegistry;

        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
        @notice This function adds liquidity to a Curve pool with ETH or ERC20 tokens
        @param fromTokenAddress The token used for entry (address(0) if ether)
        @param toTokenAddress The intermediate ERC20 token to swap to
        @param swapAddress Curve swap address for the pool
        @param incomingTokenQty The amount of fromTokenAddress to invest
        @param minPoolTokens The minimum acceptable quantity of Curve LP to receive. Reverts otherwise
        @param swapTarget Excecution target for the first swap
        @param swapData DEX quote data
        @param affiliate Affiliate address
        @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
        @return crvTokensBought Quantity of Curve LP tokens received
    */
    function ZapIn(
        address fromTokenAddress,
        address toTokenAddress,
        address swapAddress,
        uint256 incomingTokenQty,
        uint256 minPoolTokens,
        address swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256 crvTokensBought) {
        uint256 toInvest =
            _pullTokens(
                fromTokenAddress,
                incomingTokenQty,
                affiliate,
                true,
                shouldSellEntireBalance
            );
        if (fromTokenAddress == address(0)) {
            fromTokenAddress = ETHAddress;
        }

        // perform zapIn
        crvTokensBought = _performZapIn(
            fromTokenAddress,
            toTokenAddress,
            swapAddress,
            toInvest,
            swapTarget,
            swapData
        );

        require(
            crvTokensBought > minPoolTokens,
            "Received less than minPoolTokens"
        );

        address poolTokenAddress = curveReg.getTokenAddress(swapAddress);

        emit zapIn(msg.sender, poolTokenAddress, crvTokensBought);

        IERC20(poolTokenAddress).transfer(msg.sender, crvTokensBought);
    }

    function _performZapIn(
        address fromTokenAddress,
        address toTokenAddress,
        address swapAddress,
        uint256 toInvest,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256 crvTokensBought) {
        (bool isUnderlying, uint8 underlyingIndex) =
            curveReg.isUnderlyingToken(swapAddress, fromTokenAddress);

        if (isUnderlying) {
            crvTokensBought = _enterCurve(
                swapAddress,
                toInvest,
                underlyingIndex
            );
        } else {
            //swap tokens using 0x swap
            uint256 tokensBought =
                _fillQuote(
                    fromTokenAddress,
                    toTokenAddress,
                    toInvest,
                    swapTarget,
                    swapData
                );
            if (toTokenAddress == address(0)) toTokenAddress = ETHAddress;

            //get underlying token index
            (isUnderlying, underlyingIndex) = curveReg.isUnderlyingToken(
                swapAddress,
                toTokenAddress
            );

            if (isUnderlying) {
                crvTokensBought = _enterCurve(
                    swapAddress,
                    tokensBought,
                    underlyingIndex
                );
            } else {
                (uint256 tokens, uint8 metaIndex) =
                    _enterMetaPool(swapAddress, toTokenAddress, tokensBought);

                crvTokensBought = _enterCurve(swapAddress, tokens, metaIndex);
            }
        }
    }

    /**
        @notice This function gets adds the liquidity for meta pools and returns the token index and swap tokens
        @param swapAddress Curve swap address for the pool
        @param toTokenAddress The ERC20 token to which from token to be convert
        @param swapTokens quantity of toToken to invest
        @return tokensBought quantity of curve LP acquired
        @return index index of LP token in swapAddress whose pool tokens were acquired
     */
    function _enterMetaPool(
        address swapAddress,
        address toTokenAddress,
        uint256 swapTokens
    ) internal returns (uint256 tokensBought, uint8 index) {
        address[4] memory poolTokens = curveReg.getPoolTokens(swapAddress);
        for (uint8 i = 0; i < 4; i++) {
            address intermediateSwapAddress =
                curveReg.getSwapAddress(poolTokens[i]);
            if (intermediateSwapAddress != address(0)) {
                (, index) = curveReg.isUnderlyingToken(
                    intermediateSwapAddress,
                    toTokenAddress
                );

                tokensBought = _enterCurve(
                    intermediateSwapAddress,
                    swapTokens,
                    index
                );

                return (tokensBought, i);
            }
        }
    }

    function _fillQuote(
        address fromTokenAddress,
        address toTokenAddress,
        uint256 amount,
        address swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought) {
        if (fromTokenAddress == toTokenAddress) {
            return amount;
        }

        if (swapTarget == wethTokenAddress) {
            IWETH(wethTokenAddress).deposit{ value: amount }();
            return amount;
        }

        uint256 valueToSend;
        if (fromTokenAddress == ETHAddress) {
            valueToSend = amount;
        } else {
            _approveToken(fromTokenAddress, swapTarget, amount);
        }

        uint256 initialBalance = _getBalance(toTokenAddress);

        require(approvedTargets[swapTarget], "Target not Authorized");
        (bool success, ) = swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens");

        amountBought = _getBalance(toTokenAddress) - initialBalance;

        require(amountBought > 0, "Swapped To Invalid Intermediate");
    }

    /**
        @notice This function adds liquidity to a curve pool
        @param swapAddress Curve swap address for the pool
        @param amount The quantity of tokens being added as liquidity
        @param index The token index for the add_liquidity call
        @return crvTokensBought the quantity of curve LP tokens received
    */
    function _enterCurve(
        address swapAddress,
        uint256 amount,
        uint8 index
    ) internal returns (uint256 crvTokensBought) {
        address tokenAddress = curveReg.getTokenAddress(swapAddress);
        address depositAddress = curveReg.getDepositAddress(swapAddress);
        uint256 initialBalance = _getBalance(tokenAddress);
        address entryToken = curveReg.getPoolTokens(swapAddress)[index];
        if (entryToken != ETHAddress) {
            IERC20(entryToken).safeIncreaseAllowance(
                address(depositAddress),
                amount
            );
        }

        uint256 numTokens = curveReg.getNumTokens(swapAddress);
        bool addUnderlying = curveReg.shouldAddUnderlying(swapAddress);

        if (numTokens == 4) {
            uint256[4] memory amounts;
            amounts[index] = amount;
            if (addUnderlying) {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0, true);
            } else {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0);
            }
        } else if (numTokens == 3) {
            uint256[3] memory amounts;
            amounts[index] = amount;
            if (addUnderlying) {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0, true);
            } else {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0);
            }
        } else {
            uint256[2] memory amounts;
            amounts[index] = amount;
            if (curveReg.isEthPool(depositAddress)) {
                ICurveEthSwap(depositAddress).add_liquidity{ value: amount }(
                    amounts,
                    0
                );
            } else if (addUnderlying) {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0, true);
            } else {
                ICurveSwap(depositAddress).add_liquidity(amounts, 0);
            }
        }
        crvTokensBought = _getBalance(tokenAddress) - initialBalance;
    }

    function updateCurveRegistry(ICurveRegistry newCurveRegistry)
        external
        onlyOwner
    {
        require(newCurveRegistry != curveReg, "Already using this Registry");
        curveReg = newCurveRegistry;
    }
}

// ███████╗░█████╗░██████╗░██████╗░███████╗██████╗░░░░███████╗██╗
// ╚════██║██╔══██╗██╔══██╗██╔══██╗██╔════╝██╔══██╗░░░██╔════╝██║
// ░░███╔═╝███████║██████╔╝██████╔╝█████╗░░██████╔╝░░░█████╗░░██║
// ██╔══╝░░██╔══██║██╔═══╝░██╔═══╝░██╔══╝░░██╔══██╗░░░██╔══╝░░██║
// ███████╗██║░░██║██║░░░░░██║░░░░░███████╗██║░░██║██╗██║░░░░░██║
// ╚══════╝╚═╝░░╚═╝╚═╝░░░░░╚═╝░░░░░╚══════╝╚═╝░░╚═╝╚═╝╚═╝░░░░░╚═╝
// Copyright (C) 2021 zapper

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//

///@author Zapper
///@notice This contract adds liquidity to Pancakeswap (BSC) pools using ETH or any token.
// SPDX-License-Identifier: GPL-2.0

pragma solidity ^0.8.0;
import "../../_base/ZapInBaseV3.sol";

// import "@uniswap/lib/contracts/libraries/Babylonian.sol";
library Babylonian {
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
        // else z = 0
    }
}

interface IWETH {
    function deposit() external payable;
}

interface IUniswapV2Factory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address);
}

interface IUniswapV2Router02 {
    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    function swapExactTokensForTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);
}

interface IUniswapV2Pair {
    function token0() external pure returns (address);

    function token1() external pure returns (address);

    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );
}

contract Pancakeswap_ZapIn_V3_1 is ZapInBaseV3 {
    using SafeERC20 for IERC20;

    IUniswapV2Factory private constant pancakeswapFactoryAddress =
        IUniswapV2Factory(0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73);

    IUniswapV2Router02 private constant pancakeswapRouter =
        IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);

    address private constant wbnbTokenAddress =
        0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c;

    uint256 private constant deadline =
        0xf000000000000000000000000000000000000000000000000000000000000000;

    constructor(uint256 _goodwill, uint256 _affiliateSplit)
        ZapBaseV2(_goodwill, _affiliateSplit)
    {
        // 0x exchange
        approvedTargets[0xDef1C0ded9bec7F1a1670819833240f027b25EfF] = true;
    }

    event zapIn(address sender, address pool, uint256 tokensRec);

    /**
    @notice Add liquidity to Pancakeswap pools with ETH/ERC20 Tokens
    @param _FromTokenContractAddress The ERC20 token used (address(0x00) if ether)
    @param _pairAddress The Pancakeswap pair address
    @param _amount The amount of fromToken to invest
    @param _minPoolTokens Minimum quantity of pool tokens to receive. Reverts otherwise
    @param _swapTarget Excecution target for the first swap
    @param swapData DEX quote data
    @param affiliate Affiliate address
    @param transferResidual Set false to save gas by donating the residual remaining after a Zap
    @param shouldSellEntireBalance If True transfers entrire allowable amount from another contract
    @return Amount of LP bought
     */
    function ZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        uint256 _minPoolTokens,
        address _swapTarget,
        bytes calldata swapData,
        address affiliate,
        bool transferResidual,
        bool shouldSellEntireBalance
    ) external payable stopInEmergency returns (uint256) {
        uint256 toInvest =
            _pullTokens(
                _FromTokenContractAddress,
                _amount,
                affiliate,
                true,
                shouldSellEntireBalance
            );

        uint256 LPBought =
            _performZapIn(
                _FromTokenContractAddress,
                _pairAddress,
                toInvest,
                _swapTarget,
                swapData,
                transferResidual
            );
        require(LPBought >= _minPoolTokens, "High Slippage");

        emit zapIn(msg.sender, _pairAddress, LPBought);

        IERC20(_pairAddress).safeTransfer(msg.sender, LPBought);
        return LPBought;
    }

    function _getPairTokens(address _pairAddress)
        internal
        pure
        returns (address token0, address token1)
    {
        IUniswapV2Pair uniPair = IUniswapV2Pair(_pairAddress);
        token0 = uniPair.token0();
        token1 = uniPair.token1();
    }

    function _performZapIn(
        address _FromTokenContractAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData,
        bool transferResidual
    ) internal returns (uint256) {
        uint256 intermediateAmt;
        address intermediateToken;
        (address _ToUniswapToken0, address _ToUniswapToken1) =
            _getPairTokens(_pairAddress);

        if (
            _FromTokenContractAddress != _ToUniswapToken0 &&
            _FromTokenContractAddress != _ToUniswapToken1
        ) {
            // swap to intermediate
            (intermediateAmt, intermediateToken) = _fillQuote(
                _FromTokenContractAddress,
                _pairAddress,
                _amount,
                _swapTarget,
                swapData
            );
        } else {
            intermediateToken = _FromTokenContractAddress;
            intermediateAmt = _amount;
        }

        // divide intermediate into appropriate amount to add liquidity
        (uint256 token0Bought, uint256 token1Bought) =
            _swapIntermediate(
                intermediateToken,
                _ToUniswapToken0,
                _ToUniswapToken1,
                intermediateAmt
            );

        return
            _uniDeposit(
                _ToUniswapToken0,
                _ToUniswapToken1,
                token0Bought,
                token1Bought,
                transferResidual
            );
    }

    function _uniDeposit(
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 token0Bought,
        uint256 token1Bought,
        bool transferResidual
    ) internal returns (uint256) {
        _approveToken(
            _ToUnipoolToken0,
            address(pancakeswapRouter),
            token0Bought
        );
        _approveToken(
            _ToUnipoolToken1,
            address(pancakeswapRouter),
            token1Bought
        );

        (uint256 amountA, uint256 amountB, uint256 LP) =
            pancakeswapRouter.addLiquidity(
                _ToUnipoolToken0,
                _ToUnipoolToken1,
                token0Bought,
                token1Bought,
                1,
                1,
                address(this),
                deadline
            );

        if (transferResidual) {
            //Returning Residue in token0, if any.
            if (token0Bought - amountA > 0) {
                IERC20(_ToUnipoolToken0).safeTransfer(
                    msg.sender,
                    token0Bought - amountA
                );
            }

            //Returning Residue in token1, if any
            if (token1Bought - amountB > 0) {
                IERC20(_ToUnipoolToken1).safeTransfer(
                    msg.sender,
                    token1Bought - amountB
                );
            }
        }

        return LP;
    }

    function _fillQuote(
        address _fromTokenAddress,
        address _pairAddress,
        uint256 _amount,
        address _swapTarget,
        bytes memory swapData
    ) internal returns (uint256 amountBought, address intermediateToken) {
        if (_swapTarget == wbnbTokenAddress) {
            IWETH(wbnbTokenAddress).deposit{ value: _amount }();
            return (_amount, wbnbTokenAddress);
        }

        uint256 valueToSend;
        if (_fromTokenAddress == address(0)) {
            valueToSend = _amount;
        } else {
            _approveToken(_fromTokenAddress, _swapTarget, _amount);
        }

        (address _token0, address _token1) = _getPairTokens(_pairAddress);
        IERC20 token0 = IERC20(_token0);
        IERC20 token1 = IERC20(_token1);
        uint256 initialBalance0 = token0.balanceOf(address(this));
        uint256 initialBalance1 = token1.balanceOf(address(this));

        require(approvedTargets[_swapTarget], "Target not Authorized");
        (bool success, ) = _swapTarget.call{ value: valueToSend }(swapData);
        require(success, "Error Swapping Tokens 1");

        uint256 finalBalance0 =
            token0.balanceOf(address(this)) - initialBalance0;
        uint256 finalBalance1 =
            token1.balanceOf(address(this)) - initialBalance1;

        if (finalBalance0 > finalBalance1) {
            amountBought = finalBalance0;
            intermediateToken = _token0;
        } else {
            amountBought = finalBalance1;
            intermediateToken = _token1;
        }

        require(amountBought > 0, "Swapped to Invalid Intermediate");
    }

    function _swapIntermediate(
        address _toContractAddress,
        address _ToUnipoolToken0,
        address _ToUnipoolToken1,
        uint256 _amount
    ) internal returns (uint256 token0Bought, uint256 token1Bought) {
        IUniswapV2Pair pair =
            IUniswapV2Pair(
                pancakeswapFactoryAddress.getPair(
                    _ToUnipoolToken0,
                    _ToUnipoolToken1
                )
            );
        (uint256 res0, uint256 res1, ) = pair.getReserves();
        if (_toContractAddress == _ToUnipoolToken0) {
            uint256 amountToSwap = calculateSwapInAmount(res0, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token1Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken1,
                amountToSwap
            );
            token0Bought = _amount - amountToSwap;
        } else {
            uint256 amountToSwap = calculateSwapInAmount(res1, _amount);
            //if no reserve or a new pair is created
            if (amountToSwap <= 0) amountToSwap = _amount / 2;
            token0Bought = _token2Token(
                _toContractAddress,
                _ToUnipoolToken0,
                amountToSwap
            );
            token1Bought = _amount - amountToSwap;
        }
    }

    function calculateSwapInAmount(uint256 reserveIn, uint256 userIn)
        internal
        pure
        returns (uint256)
    {
        return
            (Babylonian.sqrt(
                reserveIn * ((userIn * 3988000) + (reserveIn * 3988009))
            ) - (reserveIn * 1997)) / 1994;
    }

    /**
    @notice This function is used to swap ERC20 <> ERC20
    @param _FromTokenContractAddress The token address to swap from.
    @param _ToTokenContractAddress The token address to swap to. 
    @param tokens2Trade The amount of tokens to swap
    @return tokenBought The quantity of tokens bought
    */
    function _token2Token(
        address _FromTokenContractAddress,
        address _ToTokenContractAddress,
        uint256 tokens2Trade
    ) internal returns (uint256 tokenBought) {
        if (_FromTokenContractAddress == _ToTokenContractAddress) {
            return tokens2Trade;
        }

        _approveToken(
            _FromTokenContractAddress,
            address(pancakeswapRouter),
            tokens2Trade
        );

        address pair =
            pancakeswapFactoryAddress.getPair(
                _FromTokenContractAddress,
                _ToTokenContractAddress
            );
        require(pair != address(0), "No Swap Available");
        address[] memory path = new address[](2);
        path[0] = _FromTokenContractAddress;
        path[1] = _ToTokenContractAddress;

        tokenBought = pancakeswapRouter.swapExactTokensForTokens(
            tokens2Trade,
            1,
            path,
            address(this),
            deadline
        )[path.length - 1];

        require(tokenBought > 0, "Error Swapping Tokens 2");
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./SafeERC20.sol";

/**
 * @dev A token holder contract that will allow a beneficiary to extract the
 * tokens after a given release time.
 *
 * Useful for simple vesting schedules like "advisors get all of their tokens
 * after 1 year".
 */
contract TokenTimelock {
    using SafeERC20 for IERC20;

    // ERC20 basic token contract being held
    IERC20 private immutable _token;

    // beneficiary of tokens after they are released
    address private immutable _beneficiary;

    // timestamp when token release is enabled
    uint256 private immutable _releaseTime;

    constructor(
        IERC20 token_,
        address beneficiary_,
        uint256 releaseTime_
    ) {
        // solhint-disable-next-line not-rely-on-time
        require(
            releaseTime_ > block.timestamp,
            "TokenTimelock: release time is before current time"
        );
        _token = token_;
        _beneficiary = beneficiary_;
        _releaseTime = releaseTime_;
    }

    /**
     * @return the token being held.
     */
    function token() public view virtual returns (IERC20) {
        return _token;
    }

    /**
     * @return the beneficiary of the tokens.
     */
    function beneficiary() public view virtual returns (address) {
        return _beneficiary;
    }

    /**
     * @return the time when the tokens are released.
     */
    function releaseTime() public view virtual returns (uint256) {
        return _releaseTime;
    }

    /**
     * @notice Transfers tokens held by timelock to beneficiary.
     */
    function release() public virtual {
        // solhint-disable-next-line not-rely-on-time
        require(
            block.timestamp >= releaseTime(),
            "TokenTimelock: current time is before release time"
        );

        uint256 amount = token().balanceOf(address(this));
        require(amount > 0, "TokenTimelock: no tokens to release");

        token().safeTransfer(beneficiary(), amount);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * The defaut value of {decimals} is 18. To select a different value for
     * {decimals} you should overload it.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);

        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(
            currentAllowance >= amount,
            "ERC20: transfer amount exceeds allowance"
        );
        _approve(sender, _msgSender(), currentAllowance - amount);

        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender] + addedValue
        );
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        uint256 senderBalance = _balances[sender];
        require(
            senderBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        _balances[sender] = senderBalance - amount;
        _balances[recipient] += amount;

        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] = accountBalance - amount;
        _totalSupply -= amount;

        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    function hasRole(bytes32 role, address account)
        external
        view
        returns (bool);

    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    function grantRole(bytes32 role, address account) external;

    function revokeRole(bytes32 role, address account) external;

    function renounceRole(bytes32 role, address account) external;
}

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(
        bytes32 indexed role,
        bytes32 indexed previousAdminRole,
        bytes32 indexed newAdminRole
    );

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {_setupRole}.
     */
    event RoleGranted(
        bytes32 indexed role,
        address indexed account,
        address indexed sender
    );

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(
        bytes32 indexed role,
        address indexed account,
        address indexed sender
    );

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return
            interfaceId == type(IAccessControl).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account)
        public
        view
        override
        returns (bool)
    {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{20}) is missing role (0x[0-9a-f]{32})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account)
        public
        virtual
        override
        onlyRole(getRoleAdmin(role))
    {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account)
        public
        virtual
        override
        onlyRole(getRoleAdmin(role))
    {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account)
        public
        virtual
        override
    {
        require(
            account == _msgSender(),
            "AccessControl: can only renounce roles for self"
        );

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        emit RoleAdminChanged(role, getRoleAdmin(role), adminRole);
        _roles[role].adminRole = adminRole;
    }

    function _grantRole(bytes32 role, address account) private {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant alphabet = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length)
        internal
        pure
        returns (string memory)
    {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId)
        public
        view
        virtual
        override
        returns (bool)
    {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  }
}

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[{"inputs":[{"internalType":"uint256","name":"_goodwill","type":"uint256"},{"internalType":"uint256","name":"_affiliateSplit","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"address","name":"pool","type":"address"},{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"tokensRec","type":"uint256"}],"name":"zapOut","type":"event"},{"inputs":[{"internalType":"address","name":"toTokenAddress","type":"address"},{"internalType":"address","name":"fromPoolAddress","type":"address"},{"internalType":"uint256","name":"incomingLP","type":"uint256"},{"internalType":"uint256","name":"minTokensRec","type":"uint256"},{"internalType":"address[]","name":"swapTargets","type":"address[]"},{"internalType":"bytes[]","name":"swapData","type":"bytes[]"},{"internalType":"address","name":"affiliate","type":"address"},{"internalType":"bool","name":"shouldSellEntireBalance","type":"bool"}],"name":"ZapOut","outputs":[{"internalType":"uint256","name":"tokensRec","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"fromPoolAddress","type":"address"},{"internalType":"uint256","name":"incomingLP","type":"uint256"},{"internalType":"address","name":"affiliate","type":"address"}],"name":"ZapOut2PairToken","outputs":[{"internalType":"uint256","name":"amountA","type":"uint256"},{"internalType":"uint256","name":"amountB","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"fromPoolAddress","type":"address"},{"internalType":"uint256","name":"incomingLP","type":"uint256"},{"internalType":"address","name":"affiliate","type":"address"},{"internalType":"bytes","name":"permitSig","type":"bytes"}],"name":"ZapOut2PairTokenWithPermit","outputs":[{"internalType":"uint256","name":"amountA","type":"uint256"},{"internalType":"uint256","name":"amountB","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"toTokenAddress","type":"address"},{"internalType":"address","name":"fromPoolAddress","type":"address"},{"internalType":"uint256","name":"incomingLP","type":"uint256"},{"internalType":"uint256","name":"minTokensRec","type":"uint256"},{"internalType":"bytes","name":"permitSig","type":"bytes"},{"internalType":"address[]","name":"swapTargets","type":"address[]"},{"internalType":"bytes[]","name":"swapData","type":"bytes[]"},{"internalType":"address","name":"affiliate","type":"address"}],"name":"ZapOutWithPermit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"affiliateBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"affiliates","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"tokens","type":"address[]"}],"name":"affilliateWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"approvedTargets","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"feeWhitelist","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"goodwill","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"fromPoolAddress","type":"address"},{"internalType":"uint256","name":"liquidity","type":"uint256"}],"name":"removeLiquidityReturn","outputs":[{"internalType":"uint256","name":"amountA","type":"uint256"},{"internalType":"uint256","name":"amountB","type":"uint256"},{"internalType":"address","name":"token0","type":"address"},{"internalType":"address","name":"token1","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"bool[]","name":"isApproved","type":"bool[]"}],"name":"setApprovedTargets","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_affiliate","type":"address"},{"internalType":"bool","name":"_status","type":"bool"}],"name":"set_affiliate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"zapAddress","type":"address"},{"internalType":"bool","name":"status","type":"bool"}],"name":"set_feeWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_new_affiliateSplit","type":"uint256"}],"name":"set_new_affiliateSplit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_new_goodwill","type":"uint256"}],"name":"set_new_goodwill","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stopped","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"toggleContractActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"totalAffiliateBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"tokens","type":"address[]"}],"name":"withdrawTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _goodwill (uint256): 0
Arg [1] : _affiliateSplit (uint256): 0

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000

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